What of Earth?
The ground shakes when this happens.
What is an earthquake?
Three types of rock.
What are sedimentary, igneous and metamorphic?
An environment that stays mostly the same.
What is a stable environment?
Rock that is formed when sediment compacts and cements.
What is sedimentary rock?
Scientists make these to learn about the real world.
What is a model?
What did the stone say to his girlfriend on Valentine's Day?
Dinosaur bones
What is a type of fossil?
An organism that has died and been covered with sediment.
What is a fossil?
What is the best school on Earth?
A scientist that studies rock.
What is a geologist?