Astronomy Unit 1.3 Astronomical Units (AU)

Which unit of measurement is used to measure distances within our solar system?

• inches

• kilometers

• miles

• Astronomical units

What do we use astronomical units to measure?

• distances in our solar system
  
• How far our solar system is from others in our galaxy.
  
• The distances between galaxies. 
  
• The distance from one side of the universe to the other. 

Tags

NGSS.MS-ESS1-3

What is an astronomical unit (A.U.)?

• the time it takes light to travel one year

• the distance between the Earth and the Moon

• the distance between the Earth and the Sun

• the distance between the Earth and the Neptune

Tags

NGSS.MS-ESS1-3

How many AU's (astronomical units) is Earth from the sun?

• .39

• 1.25

• 30

• 1

Tags

NGSS.MS-ESS1-3

Distance of Neptune is 4.5 x 10⁹ km from the Sun.

Calculate its distance in A.U. (1 AU = 1.5 x 10⁸ km)

• 30 A.U.

• 0.003 A.U.

• 4.74 X 10^-4 A.U.

• 4.74 A.U.

Tags

NGSS.MS-ESS1-3

1 A.U. =

• 1.5 x 10¹² km

• 9.5 x 10¹² km

• 1.5 x 10⁸ km

• 9.5 x 10⁸ km

Tags

NGSS.MS-ESS1-3

How many kilometers are in 2 astronomical units (A.U.)? (1 AU = 1.5 x 10⁸ km)

• 3 x 10⁸ km

• 1.5 x 10⁸ km

• 3 x 10⁹ km

• 1.5 x 10⁹ km

Tags

NGSS.MS-ESS1-3

Which of the following is approximately equal to 1 astronomical unit?

• 93 million miles

• 150 million miles

• 93 thousand miles

• 150 thousand miles

Tags

NGSS.MS-ESS1-3

If a planet is 5 A.U. from the Sun, how many kilometers is it approximately? (1 AU = 1.5 x 10⁸ km)

• 7.5 x 10⁸ km

• 7.5 x 10⁹ km

• 7.5 x 10¹⁰ km

• 7.5 x 10¹¹ km

Tags

NGSS.MS-ESS1-3

What is the approximate distance in kilometers of 0.5 A.U.? (1 AU = 1.5 x 10⁸ km)

• 7.5 x 10⁷ km

• 7.5 x 10⁸ km

• 7.5 x 10⁹ km

• 7.5 x 10¹⁰ km

Tags

NGSS.MS-ESS1-3