Category: Physics

Physics Year 12 Random Retrieval

This quiz contains all the questions in the Physics Year 12 section. The website will pick 10 questions at random.

1 / 10

An Airbus A380 at maximum take-off weight, A_max = 575,000 kg, is taxing along at 37 km h^-1. The pilot isn't paying attention and accidently hits head on another A380 that is completely empty taxing at 40 km h^-1, A_min = 277,145 kg and they rebound off each other in opposite directions. If the collision reduces the speed of A_max to 6 ms^-1 then what speed is A_min now travelling at?

4 ms^-1

6 ms^-1

10 ms^-1

20 ms^-1

2 / 10

Which of these circuit symbols represents a thermistor?

3 / 10

A 4.2 g balloon is inflated with 1.8 g of air until it is 1.4x10^-3 m³ in volume. Calculate the density of the inflated balloon.

1.3 kgm^-3

3.0 kgm^-3

4.3 kgm^-3

8.4 kgm^-3

4 / 10

Which material on the graph above is the stiffest?

5 / 10

Select the missing phrase: "For an object to be resolved in the body, the ultrasound wavelength must be ________ the object."

Larger than

Smaller than

The same size as

Half the size of

6 / 10

What happens when a ultrasound wavelength meets an interface in the body?

The ultrasound waves are reflected.

The ultrasound waves are transmitted.

Some ultrasound waves are reflected and some are transmitted.

Some ultrasound waves are absorbed by body tissue and the rest are scattered.

7 / 10

Remember Young's slits from GCSE? He's back! Incident monochromatic light of 0.43 μm is shone on a double slit of separation of 0.26 mm. If the screen is 42 cm away from the grating, calculate the fringe width.

8.92x10^-11 m

6.95x10^-4 m

3.40x10^-2 m

No diffraction pattern is produced

8 / 10

Where is the brightest maxima located?

zero order

1st order

2nd order

nth order

9 / 10

A stationary wave at the first harmonic is created on a 40 cm length of string with mass 1.2 kg. The full length of the string is 65 cm and is under tension of 3 N. Calculate the frequency.

0.125 Hz

0.196 Hz

1.25 Hz

1.96 Hz

10 / 10

Two coherent, in phase waves have a path difference of 3λ. What kind of interference occurs?

Constructive interference

Destructive interference

None

Your score is

Waves and the Nature of Light Random Retrieval

Waves & the Nature of Light Random Retrieval

This quiz contains all the questions in the Waves & the Nature of Light section. The website will pick 10 questions at random.

1 / 10

Which phenomenon of light can be explained by light acting as a particle or wave?

Diffraction

Reflection

Photoelectric Effect

Polarisation

2 / 10

For the first electron to be liberated from a helium atom 24.6 eV of energy is required. Calculate the frequency of light needed.

2.70 x10^-35 Hz

5.94x10¹⁵ Hz

1.68x10¹⁶ Hz

3.71x10³⁴ Hz

3 / 10

Why is gel added to a patient's skin when using ultrasound?

Makes the ultrasound transducer easier to slide over skin.

Prevents air entering between the transducer and skin blocking the ultrasound waves entering the body.

Makes the skin cold and reduces the interference from infrared radiation.

Prevents air entering between the transducer and skin reflecting away the ultrasound waves entering the body.

4 / 10

BBC Radio Sheffield West Midlands broadcasts on 97.4 MHz. Calculate the wavelength of the radio waves.

0.32 m

3.08 m

33.35 m

318.67 m

5 / 10

The greatest amount of diffraction occurs when _________.

The gap is half the size of the wavelength.

The gap and the wavelength are the same size.

The gap is twice the size of the wavelength.

The gap doesn't affect diffraction.

6 / 10

Why is cladding is required in fibre optics?

Avoid the loss of signal

Required to ensure total internal reflection

Protect the cable from damage

All of the above

7 / 10

Light travels at 2.25x10⁸ ms^-1 in water, what is the refractive index of water?

0.75

1.33

1.59

8 / 10

A stationary wave at the first harmonic is created on a 40 cm length of string with mass 1.2 kg. The full length of the string is 65 cm and is under tension of 3 N. Calculate the frequency.

0.125 Hz

0.196 Hz

1.25 Hz

1.96 Hz

9 / 10

The wavelength of a standing wave on a string fixed at both ends is 35 cm at the sixth harmonic, what is the full length of the string?

0.7m

1.05 m

2.1 m

2.45 m

10 / 10

An experiment is set up as shown above, with two speakers connected to the same signal generator and switched on. At what points is the path difference an integer?

A, C and E

B and D

A and E

A, B, C, D and E

Your score is

Physics Random Retrieval Y12

Physics Year 12 Random Retrieval

This quiz contains all the questions in the Physics Year 12 section. The website will pick 10 questions at random.

1 / 10

The diagram shows a swing 1.43m long. Matilda has a mass of 35 kg and is released from rest at position A by Miss Honey. Calculate the speed of Matilda at position B.

1.94 ms^-1

3.75 ms^-1

6.5 ms^-1

14.1 ms^-1

2 / 10

Complete the sentence: "Acceleration is always __________ the resultant force."

in the opposite direction as

perpendicular to

in the same direction as

irrelevant to

3 / 10

A paratrooper jumps from an aircraft. Assuming no air resistance, she accelerates due to gravity for 12 seconds before deploying her parachute. Calculate how far she falls from the aircraft until she deploys her parachute.

27 m

59 m

117 m

706 m

4 / 10

Calculate the current at A₂ in the circuit shown.

0.15 A

0.21 A

0.36 A

0.51 A

5 / 10

The current in a circuit depends on the mean drift velocity of the charge carriers. This can be defined by this equation, what is the current if the mean drift velocity of charge carriers halves?

I/2

I²

6 / 10

Two springs attached in series extend by 5 cm when a load of F is applied to them. They have different constants of 76 Nm^-1 and 31 Nm^-1 respectively. Calculate the value of F.

1.1 N

2.7 N

5.4 N

10.6 N

7 / 10

Under a 4 N force, two identical springs, in parallel, stretch 130 mm. Calculate the spring constant for one of the springs.

7.7 Nm^-1

15.4 Nm^-1

30.7 Nm^-1

61.5 Nm^-1

8 / 10

Hot gases produce ___________.

Line Absorption Spectra.

Line Emission Spectra.

Band Absorption Spectra.

Band Emission Spectra.

9 / 10

Calculate the speed of a wave with a time period of 1x10^-3 s and a wavelength of 250 cm.

400 ms^-1

2500 ms^-1

4000 ms^-1

2.5x10⁵ ms^-1

10 / 10

Calculate the frequency of a wave travelling at 500 ms^-1 with a wavelength of 25 m.

0.05 Hz

20 Hz

1.25 kHz

12.5 kHz

Your score is

Working as a Physicist Random Retrieval

This quiz contains all the questions in the Working as a Physicist section. The website will pick 10 questions at random.

1 / 10

What is 74235.44 to 3 significant figures.

74000

74000.000

74200

74200.000

2 / 10

What is 4.9999 to 3 decimal places.

4.9900

4.9990

4.999

5.000

3 / 10

Which unit measures pressure?

newtons

kilograms

pascals

4 / 10

What multiple of unit does kilo (k) have?

1 x 10³

1 x 10⁶

1 x 10 ⁹

5 / 10

Identify the dependent variable: Investigating the braking distance of different cars.

Type of car

Braking distance

Road surface

6 / 10

Select the graph that best represents the algebraic expression: y = b

7 / 10

Select the graph that best represents the algebraic expression: y = mx^-1 + c

8 / 10

How could you reduce percentage uncertainty?

Take multiple measurements and find an average.

Measure larger quantities.

Measure smaller quantities.

Use equipment with a larger uncertainty value.

9 / 10

The radius of a cheesecake in the staff room is 7.5 ±0.5 cm, what is the percentage uncertainty for the area of the cheesecake?

3.34%

6.67%

13.34%

44.49%

10 / 10

A ruler with an uncertainty of ± 0.5 mm measures the length of a Subway Footlong to be 292 mm, what is the uncertainty in the measurement.

± 0.50 mm

± 1.00 mm

± 2.00 mm

± 2.50 mm

Your score is

Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

A VW campervan cruises along a straight, flat Autobahn at a speed of 130 kmh^-1. The total resistive force, due to air resistance, is 900 N.

If the overall efficiency of the campervan is 18%, calculate the energy obtained from its fuel during 42 km journey.

3.25x10⁷ J

5.85x10⁷ J

1.23x10¹⁰ J

6.81x10¹⁰ J

2 / 10

Select the SI unit for Power.

Js^-1

m kg s^-1

m²kg s^-2

m²kg s^-3

3 / 10

Shoaib Akhtar is the fastest bowler ever. He throws a cricket ball of 163 g at a speed of 161.3km h^-1 which strikes a stationary cricket bat. Calculate the momentum of the ball before the collision.

7.3 kg ms^-1

26.3 kg ms^-1

1.6x10⁴ kg ms^-1

7.3x10⁴ kg ms^-1

4 / 10

A ball bearing is dropped in various mediums with various densities. Select the graph that shows the ball bearing dropped in a vacuum.

5 / 10

The table above shows the weight of various aliens on their home planets and their planets g value. Select the alien with the greatest mass.

Bleet

Blergh

Bloot

Marvin

6 / 10

Four teachers are fighting over the last pack of board pens as shown in the diagram. Calculate the overall resultant force.

62.46 N

62.48 N

104.44 N

106.72 N

7 / 10

This graph shows a falling object at its terminal velocity. Calculate its velocity.

0.75 ms^-1

0.78 ms^-1

1.5 ms^-1

1.56 ms^-1

8 / 10

These graphs show the acceleration of 4 Y9 100 m sprinters. Select the graph which shows student with the greatest acceleration.

9 / 10

A fishing boat travels at 4.6 ms^-1 200° from North towards Whitehaven Harbour Gates, which are 9.4 km away. The boat reaches the harbour, stops and the captain get on her bike and cycles due West from the Harbour Gates at 20 kmph for 25 minutes. Calculate her total displacement.

5.12 km

8.33 km

10.21 km

17.73 km

10 / 10

David walks 6 km west then 8 km north. Calculate his displacement.

6 km

8 km

10 km

14 km

Your score is

Electric Circuits Random Retrieval

This quiz contains all the questions in the Electric Circuits section. The website will pick 10 questions at random.

1 / 10

The unit of potential difference is the volt. A correct alternative unit is:

JA^-1t^-1

JAt

J^-1At

JAt^-1

2 / 10

Select effect on V_out when the light intensity increases on this circuit.

V_out increases.

V_out decreases.

V_out remains constant.

3 / 10

Select the effect on V_out when the surrounding temperature increases for circuit.

V_out increases.

V_out decreases.

V_out remains constant.

4 / 10

Calculate the potential difference at V₁ in the circuit shown.

4.36 V

7.65 V

8.72 V

12 V

5 / 10

Calculate the current at A₂ in the circuit shown.

0.13 A

0.75 A

1.5 A

2.5 A

6 / 10

The electromotive force, or e.m.f. (Ɛ), is measured in which unit?

Joules

Volts

Newtons

Coulombs

7 / 10

Which of these circuit symbols represents an LDR?

8 / 10

Select the missing word: "The more charge carries available, the greater the current therefore the resistance ___________.

Increases

Decreases

Stays the same

Remains at zero

9 / 10

Which piece of equipment can be used to measure the potential difference in a circuit?

Ammeter

Voltmeter

Luxmeter

Newton Meter

10 / 10

The current in a circuit depends on the mean drift velocity of the charge carriers. This can be defined by this equation, what is the current if the number of charge carriers doubles?

I/2

I²

Your score is

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

HMS Astute is a nuclear-powered submarine in service with the Royal Navy, she can dive to depth of 300 m in seawater of density 1024 kgm^-3. If the pressure inside the submarine is kept at sea level (1.01x10⁵ Pa), calculate the resultant force on a section of the hull of area 20 m² at her maximum depth.

2.1x10⁸ N

3.4x10⁸ N

5.8x10⁸ N

6.0x10⁸ N

2 / 10

A steel ball bearing is dropped into a fluid and travels 60 cm in 2.53 s. The diameter of the ball bearing is 6 mm and its mass 15.3 g. Calculate the viscosity of the fluid. g=9.81 Nkg^-1

1.1 Pa s

5.6 Pa s

11.2 Pa s

56.0 Pa s

3 / 10

Which diagram is showing laminar flow?

4 / 10

The Young's Modulus for a single walled carbon fibre nanotubes of diameter 4 nm is 1000 GPa. If it is placed under 75% strain, what force is required to break it?

3.8x10^-6 N

9.4x10^-6 N

3.8x10³⁰ N

9.4x10³⁰ N

5 / 10

The graph above shows a fishing wire being extended by adding masses. Use the graph to estimate the elastic strain energy of the material.

9.7 J

10.0 J

19.4 J

32.3 J

6 / 10

A wire of 1.2 m extends a 3 mm when a load of 20 N is applied to it. Calculate it's strain.

2.5x10^-3 Nm^-2

2.5x10^-3

0.4 Nm^-2

0.4

7 / 10

Two springs attached in series extend by 5 cm when a load of F is applied to them. They have different constants of 76 Nm^-1 and 31 Nm^-1 respectively. Calculate the value of F.

1.1 N

2.7 N

5.4 N

10.6 N

8 / 10

What is another term for tensile deformation?

Extension

The Limit of Proportionality

Compression

The Elastic Limit

9 / 10

A meteor traveling through space has a k = 4.2x10⁶ Nm^-1 and a force of 5x10⁸ N. Calculate the extension of the meteor.

8.4x10^-3 m

8.4 m

11.9 m

119.0 m

10 / 10

A spring extends by 12 cm when a mass of 87 g is attached to it. Calculate the spring constant. g = 9.81 ms^-2

0.01 Nm^-1

0.10 Nm^-1

1.02 Nm^-1

10.24 Nm^-1

Your score is

Waves & the Nature of Light Random Retrieval

This quiz contains all the questions in the Waves & the Nature of Light section. The website will pick 10 questions at random.

1 / 10

What is the technique used in ultrasound scanning?

Sonar

Pulse-Echo

US-Reflection

Transducing

2 / 10

Monochromatic light of wavelength λ diffracts through a grating of d. What happens to the value of θ if the wavelength was changed to 2λ?

Nothing

θ would increase

θ would decrease

3 / 10

Diffraction is an example of light behaving as a __________.

Particle

Wave

4 / 10

An object is 30 mm from a convex lens with focal length 8 cm. Is the image virtual or real?

Real

Virtual

5 / 10

Which diagram represents a concave lens?

6 / 10

Which type(s) of images do convex lenses form?

Real only

Virtual only

Both real and virtual

7 / 10

This image shows a cross section of fibre optic cable. Select why the ray enters the cladding.

The angle of incidence is greater than the critical angle

The angle of incidence is less than the critical angle

The angle of refraction is greater than the critical angle

The angle of refraction is less than the critical angle

8 / 10

The image above shows two wave fronts before, during and after meeting. What is this an example of?

Constructive interference

Destructive interference

Stationary wave

9 / 10

Soumya plays a note of wavelength 25 cm on her synthesiser. She knows the speed of sound is 340 ms^-1 in air. Calculate the frequency.

13.6 Hz

85 Hz

1360 Hz

8.5 kHz

10 / 10

Calculate the frequency of a wave travelling at 500 ms^-1 with a wavelength of 25 m.

0.05 Hz

20 Hz

1.25 kHz

12.5 kHz

Your score is

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

In order to calculate viscous drag (F), the equation above is used. What is a unit for η?

Nkg^-1

Nms^-1

Nkgm^-1

Nsm^-2

2 / 10

When the temperature increases, what is the effect on fluids' viscosities?

Gases become less viscous, liquids become more viscous.

Gases become more viscous, liquids become less viscous.

Gases and liquids become less viscous.

Gases and liquids become more viscous.

3 / 10

Two wires, Q and W, are connected in series and a force, F is applied. Q and W have the same length, l the same diameter, d but are made from different materials. Therefore, the Young's Modulus of Q, E, is twice the value of W. Which expression is correct for the total extension in the system?

4 / 10

A copper wire of diameter 0.6 mm, X, is joined in series to the end of another copper wire of diameter 0.125 mm, Y. Both wires are 80 cm in length when no load is applied. A 15 N load is hung on the end of the wires as shown in the diagram below. If the Young's Modulus of copper is 128 GPa, calculate the extension for each wire.

ExtensionX = 0.3 mm, ExtensionY = 7.6 mm

ExtensionX = 0.4 mm, ExtensionY = 9.5 mm

ExtensionX = 1.4 mm, ExtensionY = 1.6 mm

ExtensionX = 2.3 mm, ExtensionY = 11.9 mm

5 / 10

What is Young's modulus a measure of?

The ductility of a material.

The tensile strength of a material.

The stiffness of a material.

The brittleness of a material.

6 / 10

A material has a stress of 6x10⁸ Nm^-2 and is placed under a 5% strain. Calculate the value for the materials Young's modulus.

1.2x10⁸ Nm^-2

3x10⁹ Nm^-2

1.2x10¹⁰ Nm^-2

3x10¹¹ Nm^-2

7 / 10

Which material on the graph above is the stiffest?

8 / 10

Select the graph with the correct labels.

9 / 10

A copper wire has a length of 25 cm and a force of 400 N is applied to the wire, which causes it to stretch to 28.9 cm. Calculate the elastic strain energy stored in the wire.

7.8 J

15.6 J

78 J

156 J

10 / 10

A spring extends by 12 cm when a mass of 87 g is attached to it. Calculate the spring constant. g = 9.81 ms^-2

0.01 Nm^-1

0.10 Nm^-1

1.02 Nm^-1

10.24 Nm^-1

Your score is

Electric Circuits Random Retrieval

This quiz contains all the questions in the Electric Circuits section. The website will pick 10 questions at random.

1 / 10

The unit of power is the watt. A correct alternative unit is:

VsC^-1

CV^-1S^-1

VCs^-1

VCs

2 / 10

The unit of current is the ampere. A correct alternative unit is:

VΩ

VΩ^-1

V^-1Ω^-1

ΩV^-1

3 / 10

Select a use for this circuit in fluctuating light conditions. Assume V_out is the location of external circuitry

A fan to switch on in warm temperatures.

Street lights to switch on in darkness.

Operate a heater in a reptile house.

A speaker that operates upon sunrise.

4 / 10

Calculate the total resistance of the circuit shown.

0.62 Ω

1.6 Ω

5 Ω

15 Ω

5 / 10

A cell of e.m.f. 3.0 V and internal resistance 0.3 Ω is connected in a series with an ammeter reading 0.25 A and a motorised hula girl who dances when the circuit is complete. Calculate the power supplied by the cell.

0.71 W

0.73 W

0.75 W

0.77 W

6 / 10

The unit for energy is the Joule, what is this in SI base units?

m²kg s^-2

m²kg s^-3

m kg s²

Js^-1

7 / 10

The unit for potential difference is Voltage, what is this in SI base units?

m² kg s^-3 A^-1

A s

J s^-1 A^-1

8 / 10

A head torch used on a D of E expedition is rated at 3W with a 3.7 V battery, how many electrons pass through in the 5 minutes it takes for a return trip to campsite bathroom at night?

5.07x10¹⁸ electrons

1.30x10¹⁹ electrons

3.04x10²⁰ electrons

1.52x10²¹ electrons

9 / 10

Calculate the the time taken for a current of 5.2 mA to reach a charge of 25 C.

0.13 seconds

4.8 seconds

2 minutes 10 seconds

80 minutes 8 seconds

10 / 10

A smart phone has a charge flowing through it of 2 mC every 5 s. Calculate the current.

0.4 A

0.01 A

4x10^-3 A

1x10^-3 A

Your score is

Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

A uniform plank GD has mass 13 kg and length 1.8 m. A mass 6.8 kg is attached to the plank at D. The plank remains balanced due two ropes attached The tension in the rope at G is half the tension of the the rope at A, calculate the tension in the rope at A. g = 9.81 ms^-2

59 N

130 N

234 N

469 N

2 / 10

You're down the allotment and are carrying your 65 kg Nana in a 20kg wheelbarrow. Your Nana's and the wheelbarrow's weight acts 60 mm from the centre of the wheel. What force do you need to apply to the end of the handle, 1.2 m from the centre of the wheel, to move your Nana about? g = 9.81 ms^-2

9.8 N

31.9 N

41.7 N

50.3 N

3 / 10

The diagram shows four different combinations of a baby’s mobile with four different weights: 1 N, 2 N, 3 N and 4 N. All the stars are horizontally 50 mm apart. Select the mobile that would be perfectly balanced.

4 / 10

A VW campervan cruises along a straight, flat Autobahn at a speed of 130 kmh^-1. The total resistive force, due to air resistance, is 900 N.

If the overall efficiency of the campervan is 18%, calculate the energy obtained from its fuel during 42 km journey.

3.25x10⁷ J

5.85x10⁷ J

1.23x10¹⁰ J

6.81x10¹⁰ J

5 / 10

Select the best statement for Newton's 2nd Law

An object will remain at rest or at a constant velocity unless acted on by a resultant force.

The rate of change in momentum of a body is directly proportional to the resultant force applied.

An object will remain at rest unless acted on by a resultant force.

When two objects interact they will exert equal and opposite forces on each other.

6 / 10

Select the best statement for Newton's 1st Law:

An object will remain at rest unless acted on by a resultant force.

An object will remain at rest or at a constant velocity unless acted on by a resultant force.

The rate of change in momentum of a body is directly proportional to the resultant force applied.

When two objects interact they will exert equal and opposite forces on each other.

7 / 10

Marvin the Martian fires his gun horizontally at Bugs Bunny at a height of 60 cm. It fires at 550 ms^-1, but misses. Calculate how far away from Marvin the shot lands. g_Mars = 3.71 ms^-2

67.3 m

177.9 m

192.4 m

312.8 m

8 / 10

A climber falls from a rock face and accelerates due to gravity for 3 seconds before his rope stops his fall. What distance did he fall?

14.7 m

29.4 m

44.1 m

88.3 m

9 / 10

Select if the following is a scalar or a vector: displacement

Scalar

Vector

10 / 10

Select if the following is a scalar or a vector: mass

Scalar

Vector

Your score is

Working as a Physicist Random Retrieval

This quiz contains all the questions in the Working as a Physicist section. The website will pick 10 questions at random.

1 / 10

What is 100.249 to 2 decimal places.

100.00

100.20

100.25

100.30

2 / 10

Which is the SI unit for mass?

gram

kilogram

metric tonne

3 / 10

Which is the SI unit for length?

millimetre

metre

astronomical unit

4 / 10

Which is the SI unit for temperature?

kelvin

celsius

fahrenheit

5 / 10

Which is the SI unit for the amount of a substance?

kilogram

mole

litre

6 / 10

Which unit measures electric potential difference?

amperes

volts

ohms

7 / 10

What multiple of unit does kilo (k) have?

1 x 10³

1 x 10⁶

1 x 10 ⁹

8 / 10

What is 3.2 cm in nanometres?

3.2 x 10^-3 nm

3.2x10⁷ nm

3.2 x 10^-9 nm

9 / 10

Identify the a control variable: How does bulb brightness vary with bulb type?

Type of bulb

Light intensity of bulb

Power supplied to bulb

10 / 10

A group of students time a ball bearing dropping through a tube of glycerol. They record the following times, in seconds: 9.2, 9.0, 8.9, 8.9 and 9.5. What is the uncertainty?

± 0.1 s

± 0.2 s

± 0.3 s

± 0.6 s

Your score is

U11.1 – The 4 Types of Nuclear Radiation

105

The Four Types of Nuclear Radiation

1 / 15

Select the correct symbol for Alpha radiation.

2 / 15

Which material is sufficient to stop Beta-minus radiation?

A few cm of air

Paper

A few mm of aluminium

A vacuum

3 / 15

What is not a source of background radiation?

Cosmic radiation

WiFi devices

Rocks

Medical devices

4 / 15

What is a Beta-plus particle?

Positron

Electron

Helium Nucleus

Photon

5 / 15

What is not a cause of instability in the nucleus?

Too few neutrons

Too few nucleons

Too much energy

Too many neutrons

6 / 15

Which of the following is the least ionising?

Alpha

Beta-minus

Beta-plus

Gamma

7 / 15

Select the most appropriate word to complete the sentence: "Radioactive Decay is ____________."

Dangerous

Random

Endothermic

Exothermic

8 / 15

What is the relative charge of an Alpha particle?

9 / 15

What is the range of a Beta-plus particle?

Negligible

The same as Beta-minus

The opposite of Beta-minus

Infinite

10 / 15

What is the relative charge of a Beta-minus particle?

11 / 15

What is the charge of an Alpha particle?

1.6x10^-19

3.2x10^-19

6.4x10^-19

12 / 15

Which of the following is the most penetrating?

Alpha

Beta-minus

Beta-plus

Gamma

13 / 15

What is the fastest moving type of radiation?

Alpha

Beta-minus

Beta-plus

Gamma

14 / 15

What is the charge of an Beta-plus particle?

Negligible

1.6x10^-19 C

-1.6x10^-19 C

15 / 15

Select the correct statement.

The more ionisations, the further the radiation will travel.

The more ionisations, the faster the radiation will travel.

The less ionisations, the faster the radiation will travel.

The less ionisations, the further the radiation will travel.

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Nuclear Radiation

U10.3 – The Doppler Effect

The Doppler Effect

1 / 10

When a light source moves away from an observer, the wavelength becomes ____________.

Shorter

Longer

Stays the same

2 / 10

Which stationary observer will hear a higher pitched sound?

3 / 10

When a light source moves away from an observer, the light undergoes __________.

blueshift

redshift

whiteshift

blackshift

4 / 10

Select the best definition for the Big Bang Theory.

The universe exploded into existence from a single point.

An American TV sitcom centred around scientists.

All matter was originally compacted into a ball with infinite density and intense heat and began expanding.

All matter was originally compacted into a ball with infinite density and intense heat. The matter began expanding and continues to do so to this day,

5 / 10

Andromeda has a redshift of -0.001001, what is it's movement in relation to Earth?

Away from Earth

Towards Earth

Stationary

Can't tell

6 / 10

A galaxy has redshift of 0.19. Estimate the speed it is moving relative to Earth. H₀ = 75 kms^-1MPc^-1. 1 year ≈ 3.16x10⁷s, 1 pc ≈ 3.09x10¹⁶ m, c = 3x10⁸ ms^-1

5.70x10⁷ ms^-1

1.59x10⁹ ms^-1

7.83x10¹⁶ ms^-1

2.35x10²⁵ ms^-1

7 / 10

A galaxy has redshift of -0.32. Estimate the speed it is moving relative to Earth. H₀ = 75 kms^-1MPc^-1. 1 year ≈ 3.16x10⁷s, 1 pc ≈ 3.09x10¹⁶ m, c = 3x10⁸ ms^-1

9.37x10⁶ ms^-1

9.60x10⁷ ms^-1

1.32x10¹⁷ ms^-1

3.96x10²⁵ ms^-1

8 / 10

On this graph, which line represents the density of the universe is less than the critical density?

9 / 10

A galaxy has redshift of 0.48. Estimate the distance it is from Earth in light years. H₀ = 75 kms^-1MPc^-1. 1 year ≈ 3.16x10⁷s, 1 pc ≈ 3.09x10¹⁶ m, c = 3x10⁸ ms^-1

1.44x10⁸ ly

5.49x10⁹ ly

5.93x10²⁵ ly

6.25x10²⁵ ly

10 / 10

Estimate the diameter of the observable universe. H₀ = 75 kms^-1MPc^-1. 1 year ≈ 3.16x10⁷s, 1 pc ≈ 3.09x10¹⁶ m, c = 3x10⁸ ms^-1

1.3x10⁹ ly

2.6x10⁹ ly

1.3x10¹⁰ ly

2.6x10¹⁰ ly

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