Mystery Science - Unit 2 Test (Lessons 3-5)

How do scientists know that the footprints they found came from dinosaurs?

• They all had 6 toes.

• They were larger than human footprints.

• The footprints were next to the dinosaur fossils.

• They were green footprints like all the dinosaurs.

How can you tell if someone was walking or running just by looking at their footprints?

• The footprints of a runner are farther apart then a walker.

• You will only see the heel on a runner footprints.

• The walking footprints are missing the toes.

• The footprints are in a crooked path for a runner.

What can you do to figure out if you can run faster than CeeLo?

• Have a race with him.

• Measure the length of your foot.

• Make sure your shoes are tied.

• You can see if you if your steps are bigger than CeeLo’s steps.

Why are there so many different kinds of dogs?

• Different breeds of dogs have been created by

  people over many generations.

• The pet shops have made them.

• From the different vitamins they take.

• Dogs are more popular then cats.

How did dairy cows become so good at producing milk?

• From eating a lot of healthy grasses.

• Cows produce more milk now because people bred the cows that produced more milk.

• Because there are machines that help them now.

• From all the farms around the world.

How is breeding dogs similar to or different from breeding apples?

• Breeding dogs and breeding apples are very similar. They both

  involve selection.

• They are nothing alike.

• They both need water to survive.

• Breeding dogs and breeding apples are very different, and have nothing in common. One is an animal and one is a fruit.

Why do green anoles climb trees?

• They are green just like the tree leaves.

• The love to swing from branch to branch.

• So they can catch squirrels to eat.

• To find more bugs to eat or to escape animals

  that are trying to eat them.

What happened to the green anoles when the brown anoles arrived on Lizard Island? Why?

• They all became sick and died.

• The brown anoles caught all of them and ate them.

• The green anoles with more sticky toe scales

  were better climbers and could escape the brown anoles.

• The green anoles moved to a new Island to escape the brown anoles.

Which green anoles were most likely to be caught by the brown anoles? Why?

• The green anoles that had fewer sticky toe pads weren’t as good at climbing to they were more likely to be eaten by the brown

  anoles.

• The green anoles that were slower runners were more likely to be caught.

• The green anoles that were older, were more likely to be caught.

• All the green anoles were eventually caught by the brown anoles, because the brown anoles could all climb up the trees.