Ocean Motion
Most ocean waves are caused by this natural force.
What is Wind?
This is the largest ocean on Earth, covering more area than all the land combined.
What is the Pacific Ocean?
This process breaks down rocks into smaller pieces without moving them.
What is Weathering?
This part of a dinosaur is most likely to fossilize.
What are the bones?
This is the name for solid material made of minerals that forms the Earth's crust.
What is a rock?
This regular rise and fall of the ocean is seen on coastlines every day.
What are tides?
This ocean surrounds the North Pole and is the smallest and shallowest.
What is the Arctic Ocean?
The key difference between this and weathering is that it involves moving particles, not just breaking them down.
What is erosion?
Most fossils are found in this type of rock.
What is sedimentary rock?
This type of rock forms when lava or magma cools and hardens.
What is igneous rock?
This force from the Moon causes ocean tides on Earth.
What is gravity?
Unlike oceans, these bodies of saltwater are smaller and usually partly enclosed by land.
What are seas?
These two natural forces—one wet and one windy—are common agents of erosion.
What are water and wind?
This term describes a fossil of an organism that lived for a short time but was widespread, helping scientists date rock layers.
What is an index fossil?
This rock type is formed by heat and pressure but not melting.
What is metamorphic rock?
These powerful, flowing movements of ocean water are caused by wind and Earth's rotation.
What are ocean currents?
This sea is so salty you can float easily in it—and it's also the lowest point on land.
What is The Dead Sea?
These parts of plants can crack rocks and also help create soil when they decay.
What are roots?
This scientific law says that in undisturbed rock layers, the oldest layers are at the bottom.
What is the Law of Superposition?
These two processes turn sediments into sedimentary rock.
What are compaction and cementation?
This process drives deep ocean currents through changes in temperature and salinity.
What is the process of thermohaline circulation?
These are the five oceans on Earth, listed from largest to smallest.
What are the Pacific, Atlantic, Indian, Southern (or Antarctic), Arctic Oceans?
This gradual process starts with bare rock and ends with rich layers that support plant life.
What is soil formation?
This type of fossil forms when an organism leaves behind only an impression or hollow space in rock.
What is a mold fossil?
This process describes how rocks change from one type to another over time in a continuous cycle.
What is the rock cycle?