What prompted Ryan and Katie to start digging in their backyard?

• Their parents promised them a pool.

• They wanted to find dinosaur bones.

• Their parents joked about digging a pool themselves.

• They were bored and wanted an adventure.

What was Ryan's initial guess about the bone they found?

• It was a rock.

• It was a horse bone.

• It was a dinosaur bone.

• It was a log.

What did Ryan and Katie learn about the bone at the museum?

• It was from a dinosaur.

• It was from a modern animal.

• It was from a woolly mammoth.

• It was a fake bone.

What era did the woolly mammoth live in?

• Jurassic Period

• Triassic Period

• Ice Age

• Cretaceous Period

What did the scientists find in addition to the bone in Ryan and Katie's backyard?

• A human skeleton

• A treasure chest

• A mammoth tusk and tooth

• A dinosaur egg

How did the scientists explain the use of mammoth tusks?

• For decoration

• To fight and find food

• To build shelters

• To swim

What did the scientists say about mammoth teeth?

• They had teeth like humans.

• They grew six sets of teeth during their lifetime.

• They had no teeth.

• They had only one set of teeth.

What was the final decision about the excavation site in Ryan and Katie's backyard?

• It was left as a historical site.

• It was turned into a swimming pool.

• It was filled back in with dirt.

• It was turned into a museum.

What did Ryan imagine when he looked at the new pool?

• A place for fish

• Dinosaurs swimming in it

• A giant Watering Hole for mammoths

• A place for birds

What are some theories about what caused the extinction of mammoths?

• Alien invasion

• Lack of water

• Changes in weather and human hunting

• Volcanic eruptions