CH 2 Bed of Bones

What type of dinosaur fossils were Dr. Forester and the team examining?

• Tyrannosaurus

• Triceratops

• Acheroraptor

• Stegosaurus

Approximately how many years ago did the Acheroraptor live?

• 66 million years

• 100 million years

• 150 million years

• 200 million years

What tool did Dr. Forester suggest using to chip the fossils out of the rock?

• Rock hammer

• Metal pick

• Plastic brush

• Cloth bag

What did Julian and Kristal find that was part of the dinosaur's backbone?

• Teeth

• Claw

• Bone

• Jawbone

What did Matt find that still looked sharp?

• Claw

• Tooth

• Rib bone

• Skull piece

What did Dr. Forester use to demonstrate how to use the tools correctly on the fossils?

• A video tutorial

• A small piece of rock

• A diagram

• A large fossil

What happens to matter when it changes from a solid state to a liquid state according to the text?

• It takes up less space because the particles are closer together.

• It takes up more space because the particles move more freely.

• It disappears completely.

• It turns into a gas immediately.

According to Dr. Forester in the text, what is true about physical changes in matter?

• They are irreversible.

• They cannot occur in nature without human intervention.

• They involve changes in the basic structure of matter particles.

• They can be reversed by adding or taking away heat.

What example does Tess use to explain a physical change in matter?

Why does Felix say he will be starving again soon after eating three energy bars?

• Because he has a high metabolism.

• Because he didn't eat enough food.

• Because the energy bars contain very few calories.

• Because he is always hungry and burns calories quickly.