4th Grade Ecosystems
This is a living part of an ecosystem, like plants or animals
Biotic
A type of wave that can be seen.
Light wave
This is the movement of rock and soil from one place to another.
Erosion
This is the ability to do work or cause change.
Energy
These are the preserved remains or traces of ancient living things.
Fossils
These organisms make their own food using sunlight.
Producers
The height of a wave.
Amplitude
This is the process of breaking down rocks into smaller pieces.
Weathering
This type of energy is energy of motion.
Kinetic energy
This is the state of matter that flows and takes the shape of its container but has a definite volume.
Liquid
These organisms break down dead plants and animals, returning nutrients to the soil.
Decomposer
The lowest point of a wave.
Trough
This is when sediment is dropped or laid down in a new place.
Deposition
This type of energy is stored energy.
Potential energy
This is a material that allows electricity to flow through it easily.
A conductor
When too many predators are removed from an ecosystem, this may happen to the prey population.
The prey increases
This is how high or low a sound is.
Pitch
These are two of the main forces that cause erosion on Earth’s surface.
ice, wind, water, or gravity
This type of energy comes from heat and warm objects.
Thermal energy
This is a material that does NOT allow electricity to flow through it easily.
Insulator
The type of diagram that shows interconnected food chains in an ecosystem.
Food web
The distance between two wave peaks, aka the length of a wave.
Wave length
This layer of Earth is made of small pieces of weathered rock and organic material that plants grow in.
Soil
This type of energy comes from power lines and appliances in your home.
Electrical energy
This type of rock is formed from layers of sediment pressed together over time.
Sedimentary rock