Solar System

When a meteoroid enters Earth's atmosphere, friction causes it to burn up and produce a streak of light called a ____________.

• meteor

• meteorite

• comet

• asteroid

If a meteoroid hits Earth's surface, it is called a ________.

• meteor
• meteorite
• comet
• asteroid

A chunk of rock or dust in space that usually comes from a comet or an asteroid is called a __________.

• meteoroid

• meteorite

• comet

• asteroid

Pluto, Eris, and Ceres are all classified as

• meteors
• meteorites
• asteroids
• dwarf planets

How do comets and asteroids compare?

• Asteroids and comets are rocky.
• Comets and asteroids are made of ice and dust.
• Asteroids are rocky, while comets are made of ice and dust.
• Comets are rocky, while asteroids are made of ice and dust.

Objects found in space that are hot balls of burning gas are called:

• Meteors

• Asteroids

• Stars

• Comets

Each planet orbits or ______ around the Sun.

• rotates

• revolves

What holds the planets in their orbits around the sun?

• gravity
• speed
• string
• air currents

What is in the center of the Heliocentric Model?

• Sun
• Comet 
• Jupiter
• Earth

In which type of model are the Sun, other planets, and the Moon in orbit around the Earth?

• heliocentric model
• tetrahedral model
• concentric model
• geocentric model