Fossils
the preserved remains of a plant or animal, such as the animal's bones or imprints of a plant.
fossil
The process by which earth’s surface is broken down into smaller pieces.
Weathering
An educated guess about what will happen in your experiment
hypothesis
covering the soil with materials like straw, wood chips, or grass clippings
mulching
a dry, hot, and arid region that receives very little rainfall
Desert
a mark left behind by a plant or animal that has decayed, but the mark remains in soft sediment
imprint fossil
Tiny pieces of rock that were broken by weathering
Sediment
the use of one of the senses (hearing, sight, touch, etc.) or measurement to gather information
observation
plants grown during the off-season when other crops aren’t being planted
cover crops
a large area of water filled with salt water
ocean
a type of rock made from tiny pieces of other rocks, sand, mud, or even bits of dead plants and animals that get layered together over time
sedimentary rock
The process of small pieces of earth moving from one place to another.
Erosion
what you measure in the experiment
dependent variable
when farmers plant crops along the shape of the land instead of straight rows.
Contour Farming
Which biome would you most likely find a catfish in?
freshwater (lakes, rivers, ponds)
The bottom layer of a sedimentary rock is typically the ______________ layer.
oldest
the geological process where material is added to a land.
deposition
the one thing that a scientist changes in an experiment
independent variable
flat areas built on sloped land
terrace farming
a wetland that's often covered with water and dominated by grasses, rushes, or sedges
marshes/swamps
a group of aquatic arthropods that lived millions of years ago and are now extinct
trilobites
a popular way to stop or slow down erosion of soil
vegetation
the things that scientists keep the same throughout the experiment.
control vairiable
A _______ sloped hill will erode faster.
higher
a large, flat area of land that covers a lot of space on Earth
plains