Unit 1 - Lesson 6 Review - Small Bodies in the Solar System

What is an asteroid?

• A large planet that orbits the sun

• A small body of rock and dust that orbits the sun

• A type of star

• A comet with a tail

What do scientists believe about asteroids?

• They are new planets forming

• They are remains of other planets

• They are pieces of the moon

• They are stars that exploded

What elements do asteroids have like Earth?

• Gold and Silver

• Iron and Nickel

• Copper and Zinc

• Lead and Tin

How small can asteroids be?

• 10 meters

• 100 meters

• 1 kilometer

• 10 kilometers

Where are the majority of asteroids located?

• In the Asteroid Belt between Mars and Jupiter

• In the Kuiper Belt beyond Neptune

• In the Oort Cloud

• On the surface of the Moon

What is believed to have caused the extinction of the dinosaurs?

• A massive flood

• An asteroid impact

• A volcanic eruption

• A giant earthquake

How long ago did the asteroid hit the Earth, according to scientist?

• 100 million years ago

• 50 million years ago

• 65 million years ago

• 25 million years ago

What effect did the asteroid impact have on the Earth's environment?

• It caused a massive flood

• It blocked sunlight with dust and smoke

• It increased the Earth's temperature

• It created new landforms

How does a comet orbit the sun?

• In a circular path

• In a straight line

• In an elongated ellipse

• In a zigzag pattern

What is a common nickname for a comet?

• Shiny star

• Bright planet

• Dirty snowball

• Cosmic cloud