ASTRONOMICAL UNIT & LIGHT YEARS

What is Astronomical Unit?

• 1000 km

• The size of our solar system

• The average distance between Earth and the Sun

• The average distance between Earth and Moon

Tags

NGSS.MS-ESS1-3

What is Light Year?

• The distance travelled by sound in a year

• The distance travelled by light in a year

• The distance travelled by sound in a minute

• The distance travelled by light in a decade

Tags

NGSS.MS-PS4-2

1 A.U. =

• 1.5 x 10¹² km

• 9.5 x 10¹² km

• 1.5 x 10⁸ km

• 9.5 x 10⁸ km

1 light year=

• 1.5 x 10⁸ km

• 9.5 x 10⁸ km

• 1.5 x 10¹² km

• 9.5 x 10¹² km

In 2006, Pluto was no longer recognised as a planet in the solar system. Instead it is known as a ........

• dwarf planet

• nebula planet

• supernova planet

• black hole planet

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

Calculate its distance in A.U.

• 30 A.U.

• 0.003 A.U.

• 4.74 X 10^-4 A.U.

• 4.74 A.U.

Distance of Jupiter is 7.78 x 10⁸ km from the Sun.

Calculate its distance in ly.

• 8.19 x 10^-5 ly

• 5.19 x 10^-4 ly

• 5.19 ly

• 0.82 ly