U10.1 – Measurements in Space

1

Measurements in Space

1 / 12

Select the definition of an Astronomical Unit (AU).

2 / 12

What is an arcsecond equal to?

3 / 12

Our Sun has a radius of 6.96x108 m and a temperature of 5778 K. Earth is approximately 1 AU from the Sun. Calculate the intensity of radiation received by Earth from the Sun. 1 AU = 1.5x1011 m

4 / 12

Select the definition of a light year (ly).

5 / 12

Complete the sentence: "The greater the angle of parallax ________________."

6 / 12

The temperature, T, of a star doubles. What effect does this have on the luminosity?

7 / 12

A star seen in the sky from Earth has an angle of parallax 2.42x10-3 arcseconds. Calculate the star's distance from Earth.1 AU = 1.5x1011 m

8 / 12

What is not an example of a standard candle?

9 / 12

Select the definition of a parsec (pc).

10 / 12

The exoplanet HD20794e is 0.509 AU from it's star, HD20794 (catchy names huh!). HD20794 has a radius 90% of our Sun and temperature of 5216.85°C. Calculate the intensity of radiation received by HD20794e from HD20794. 1 AU = 1.5x1011 m, RSun = 6.96x108 m

11 / 12

Betelgeuse is a star approximately 220 pc from Earth. Calculate Betelgeuse's angle of parallax. 1 pc = 2.06265×105 AU, 1 AU = 1.5x1011 m

12 / 12

The distance from Sheffield, U.K. to Sheffield, Alabama is 6745.78 km. What is the correct conversion to AU? 1 AU = 1.5x1011 m

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

0%