Comets, Meteors, and Asteroids

Choose more than one answer: Comets are made of

• rock

• metals

• magma

• ice

To pass instantly from a solid to gaseous state of matter is to

• evaporate

• sublimate

• condense

• precipitate

When a comet nears the sun, a _________ is formed.

• coma

• meteor

• tail

• rock

Asteroids are made of dust, rock, and metal. Basically, they are comets, but without the

• ice

• elliptical orbit

• metal

• rock

Where is the asteroid belt?

• between Saturn and Uranus

• between Jupiter and Saturn

• between Mars and Saturn

• between Mars and Jupiter

Scientists believe an asteroid hit Earth 65 billion years ago and caused the _______________ to go extinct.

• Saber-toothed Tiger

• Wooly Mammoth

• dinosaurs

• Megalodon

Meteoroids are _______________ than an asteroid.

• larger

• smaller

• smoother

• rougher

Meteors are meteoroids that hit Earth's

• atmosphere

• surface

• crust

• oceans

Choose two answers: When a meteor hits the atmosphere, it

• burns up

• causes a flash of light in the sky

• disappears

• explodes

Choose two answers: Meteors appear as ___________ but are only the size of __________

• comets

• shooting stars

• boulders

• pebbles