Scale of the universe, gravity and solar systems objects

If a star is 5 light years away from Earth, how long will it take light from this star to reach Earth?

• 10 light years

• 5 light years

• 10 years

• 5 years

An astronomical unit is based on the distance between what two astronomical bodies?

• Earth and moon

• Earth and Mars

• Earth and sun

• sun and moon

Tags

NGSS.MS-ESS1-1

How does a light year compare to an AU?

• AU is larger

• light year is larger

• light year is smaller

• both are the same size

Which is the correct order for smallest to largest astronomical bodies?

• universe, galaxy, solar system, star, planet

• solar system, galaxy, planet, universe, star

• star, planet, galaxy, solar system, universe

• planet, star, solar system, galaxy, universe

Which of the following is NOT a characteristic that defines a planet?

• orbits a star

• clears orbital path

• uniform round shape

• similar composition

The largest distance would be between two

• stars

• planets

• galaxies

• solar systems

What is the reason most meteors never hit the ground?

• Earth's atmosphere deflects them

• Earth's magnetic field deflects them

• Earth's atmosphere burns them up

• moon's gravity pulls them away from Earth

A planet orbits a __________ and a moon orbits a __________.

• planet, star

• star, planet

• moon, star

• solar system, comet

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-1

Which of the following is the shape of our galaxy?

• irregular

• spiral

• elliptical

• quasar

Tags

NGSS.MS-ESS1-2

What is at the center of a solar system?

• a black hole

• a large planet

• a star

• a nebula

Tags

NGSS.MS-ESS1-2