Rocks + Places
General
Random!
Spheres and Cycles
Challenge Words
100

Wear away or change the appearance or texture of (something) by long exposure to the air.

Weathering

100

The variable that changes as a result of changing the independent variable. (The effect)

Dependent Variable

100

Gases in the atmosphere that trap energy.

Greenhouse Gases

100

A thin layer of gases surrounding Earth

Atmosphere

100

A resource that cannot be reused or replaced easily (ex. gems, iron, copper, fossil fuels)

Nonrenewable

200

Rocks formed when other rocks are put under extreme heat and pressure

Metamorphic Rocks

200

The variable that is purposely changed (Cause)

Independent Variable

200

A series of predictable and orderly changes within an ecosystem over time.

Succession

200

All the water on Earth

Hydrosphere

200

Release of harmful materials into the environment

Pollution

300

The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained

Sustainability

300

Proof

Evidence

300

Warming that results when solar radiation is trapped by the atmosphere

Greenhouse Effect

300

The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.

Water Cycle

300

A stable community that no longer goes through major ecological changes

Climax Community

400

The series of processes that change one type of rock into another type of rock

Rock Cycle

400

An organism that eats other organisms

Consumer

400

A study that compares the costs and benefits to society of providing a public good

Cost-Benefit Analysis

400

The second-lowest layer of Earth's atmosphere.

Stratosphere

400

The build up of a substance (usually a toxin) as it passes through a food chain

Bioaccumulation

500

A community of organisms and their abiotic environment

Ecosystem

500

Means "First"

Primary

500

There are only certain amounts of resources (food, water, space).

Limited Resources

500

The movement of carbon from the nonliving environment into living things and back

Carbon Cycle

500

Accumulation of pollutants at successive levels of the food chain

Biomagnification