PSSA Science Review

a body of land with water surrounding it on three sides.

a low area between mountains or hills where streams and rivers often flow

Plants use the sun's energy to convert water and carbon dioxide into sugars

instrument used to measure temperature

a natural resource that can be replaced

the area of land that is drained by a water system. Separated by mountain ranges

An organism that makes its own food

A change that affects the appearance but not the chemical makeup of a substance.

How do clouds form?

characteristics that can be observed, measured, or changed and used to identify matter.

Release of harmful materials into the environment

the path that an object follows as it travels around another object in space

Ecosystems of several types in which vegetation is surrounded by still water. Swampy areas

information obtained through the senses.

Anything that has mass and takes up space

a resource that cannot be replaced

A measure of how hot or cold something is

A personal belief or judgment that cannot be proven true

Energy from the sun

A group of related parts that work together

A simplified version of something complex used to analyze, solve problems or make predictions.

Any standard instrument of measurement- marked at established intervals (size, distance)

A state of matter in which the object has a definite shape and volume.

A living thing