2.2.4 Earth Science Quiz

Which of these is mostly made up of ice?

• Meteors

• Asteroids

• Comets

Which of these are also called shooting stars?

• Asteroids

• Comets

• Meteors

Which is the first step in building a solar system from a solar nebula?

• The nebula collapses.

• Spinning matter increases in temperature.

• An explosion disturbs the gas and dust in the nebula.

solar nebula

• large cloud of gas and dust

• gas and dust spins

• planets orbit a star

accretion disk

• large cloud of gas and dust

• gas and dust spins

• planets orbit a star

solar system

• large cloud of gas and dust

• gas and dust spins

• planets orbit a star

gravitational instability theory

• gas and dust sticks to itself and collapses

• a core of rock and ice attracts gases

core accretion theory

• gas and dust sticks to itself and collapses

• a core of rock and ice attracts gases

What causes the tail of a comet?

• The heat from the sun

• The sun's gravity

• Earth's gravity

What lies between Mars and Jupiter?

• Oort cloud

• Main asteroid belt

• Kuiper belt