Celestial Objects and Motion

What is a comet primarily composed of?

• A large body of water and gas

• A small body of ice, frozen methane, dust, and rock

• A solid mass of iron and nickel

• A gaseous cloud of hydrogen and helium

What is the central part of a comet called?

• Coma

• Ion tail

• Nucleus

• Dust tail

What is the outer layer surrounding the nucleus of a comet called?

• Coma

• Ion tail

• Nucleus

• Dust tail

Where are asteroids commonly found?

• Between Earth and Mars

• Between Mars and Jupiter

• Between Venus and Earth

• Between Jupiter and Saturn

This theory claims the Moon & Earth formed together at the same time.

• Co-Accretion

• Capture

• Giant-Impactor

• Fission

This theory claims the Moon split directly from the Earth because it was rotating very fast while molten

• Co-Accretion

• Capture

• Giant-Impactor

• Fission

This theory claims the Moon was made elsewhere but just happened to fall into Earth's gravity.

• Co-Accretion

• Capture

• Giant-Impactor

• Fission

Tags

NGSS.MS-PS2-4

According to the Giant Impactor Theory, what celestial body collided with Earth?

• Mars

• Theia

• Venus

• Jupiter

Tags

NGSS.MS-PS2-4

What is the time it takes for Earth to make one complete spin around its axis?

• 12 hours

• 24 hours

• 48 hours

• 72 hours

What are the celestial poles?

• Points where Earth's axis intersects the celestial sphere

• Points where Earth's equator intersects the celestial sphere

• Points where the Sun's path intersects the celestial sphere

• Points where the Moon's orbit intersects the celestial sphere