Structure of the Universe

Why does the sun appear to be the largest star in the sky?

• It is far away
• It is very big
• It is the closest star to earth
• It is a planet

Tags

NGSS.5-ESS1-1

Why do planets orbit the sun (and not float around in space)?

• the moons are keeping them in place
• They were hit by an asteroid
• they were hit by a comet
• the sun's gravity keeps them in place

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The galaxy we are a part of is called:

• Milky Way

• Andromeda

• Whirlpool

• Sombrero

The ....... is space and all the matter and energy in it.

• universe

• moons only

• starts only

• planets only

All these planets are terrestrial planets except .....

• Mercury

• Venus

• Mars

• Jupiter

The four planets that orbit farthest from the sun are called gas giant planets. They are

• Jupiter, Saturn, Uranus, and Venus

• Jupiter, Saturn, Uranus, and Neptune.

• Jupiter, Saturn, Earth, and Mars

• Mars, Saturn, Uranus, and Neptune.

A ....... is the distance that light travels through space in one year.

• Meter

• Year

• light year

• kilometer

Galaxy is a collection of

• a star and the planets and asteroids that orbit around it

• thousands of stars

• billions of stars

• millions of stars

Millions of pieces of rocky material of various sizes orbit the Sun between the orbits of Mars and Jupiter. These objects are known as -

• Asteroids
• Meteors
• Comets
• Planets

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

How many of the stars visible in the night sky are closer to Earth than to the Sun?

• All of them
• None of them
• About half
• Only one