Solid rock that makes up the Moon's and Earth's outermost layers.
What is the crust?
100
The movement or vibration in rocks that make up the Earth's crust.
What is an earthquake?
100
A large mass of snow and ice that slowly moves downward and outward over the land.
What is a glacier?
100
A mountain that forms when red-hot melted rock flows through a crack onto the Earth's surface.
What is a volcano?
100
Fossil that provides evidence of the activities or behaviors of ancient organisms.
What is a trace fossil?
200
A mixture of tiny rock particles, minerals, humus, water and air.
What is soil made of?
200
A break in the Earth's outer layer caused by the movement of rocks.
What is a fault?
200
An isolated boulders left behind by a glacier.
What are erractics?
200
Melted rock inside the Earth.
What is magma?
200
A hollow space in a rock that has the shape of the remains of the organism that once occupied that space.
What is a mold fossil?
300
A vertical section of soil from the surface down to bedrock.
What is a soil profile?
300
A vibration caused by rocks moving and breaking along faults.
What are seismic waves?
300
Rock debris carried and deposited by a glacier.
What moraine?
300
Melted rock that reaches the Earth's surface.
What is lava?
300
Layer of rock where most fossils are found.
What is sedimentary rock?
400
A layer of soil differing from the layers above and below it.
What is a horizon?
400
This instrument records earthquake waves.
What is a seismograph?
400
The process by which wind and moving water carry away bits of rock.
What is erosion?
400
A large basin formed at the top of a volcano when it falls in on itself.
What is a crater?
400
A fossil that is formed when minerals from rock move into and harden within the space left by a decayed organism.
What is a cast fossil?
500
Leftover decomposed plant and animal matter in the soil.
What is a humus?
500
The layer of rock lying below the crust.
What is the mantle?
500
A period of time when vast ice sheets covered as much as 1/3 of the land, when temperatures were very low, there was heavy snowfall, and there were many glaciers.
What is the ice age?
500
A continent-sized slab of Earth's crust and upper mantel.
What is a plate?
500
A fuel formed in the Earth from plant or animal remains (eg. coal, oil, natural gas).