8TH GRADE SCIENCE STAAR REVIEW

Front

What is the primary energy source that drives all weather events?

Back

The Sun.

Front

What is the role of gravity in the motion of objects?

Back

Gravity is an unbalanced force that pulls objects toward the center of the Earth, causing them to fall.

Front

What is an artificial reef?

Back

An artificial reef is a man-made structure placed in the ocean to promote marine life.

Front

How many valence electrons are in an atom of each element in Group 15 of the periodic table?

Back

5.

Front

What happens to an object at rest when an unbalanced force acts on it?

Back

It will move in the direction of the unbalanced force.

Front

What is the difference between a renewable and non-renewable resource?

Back

Renewable resources can be replenished naturally, while non-renewable resources cannot be replaced once used.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What is the significance of the ozone layer?

Back

The ozone layer protects the Earth from harmful ultraviolet (UV) radiation from the Sun.

Front

What is the process of photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is the difference between weather and climate?

Back

Weather refers to short-term atmospheric conditions, while climate refers to long-term patterns of temperature and precipitation.