Science PSSA Prep #7

Front

Why are fats important nutrients?

Back

contain stored energy

Front

Which factor contributes to global warming?

Back

increased burning of fossil fuels

Front

Oceans, glaciers, lakes, and rivers are part of Earth's

Back

hydrosphere

Front

Back

A

Front

Options: 20, 40, 60, 80

Back

40

Front

What happens to electrical energy in a hair dryer?

Back

is transformed

Front

What can happen to drinking water from unsuspected sources?

Back

Drinking water can become polluted from unsuspected sources.

Front

Which energy sources are the most polluting? Options: nuclear and natural gas, hydropower and oil, oil and coal, natural gas and coal.

Back

oil and coal

Front

Sequence of energy transformations after a battery-operated flashlight is turned on?

Back

chemical-electrical-light

Front

The gravitational force between two objects depends on the distance between the objects and each object's

Back

mass