Forces, Densities, and Gravitational Attraction

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It increases with the speed of the object.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object based on its position or state. For example, a ball held at a height has gravitational potential energy.

Front

At which position does a dropped ball have the greatest kinetic energy?

Back

The ball has the greatest kinetic energy at position 4, just before it hits the ground.

Front

What is gravitational attraction?

Back

Gravitational attraction is the force that pulls two objects toward each other, depending on their masses and the distance between them.

Front

How does density affect the behavior of liquids?

Back

Density determines whether a liquid will float or sink in another liquid. A less dense liquid will float on a denser liquid.

Front

What is the density of water?

Back

The density of water is 1.0 grams per milliliter (g/ml).

Front

What happens to tides during a full moon?

Back

During a full moon, tides are highest due to the alignment of the Earth, moon, and sun, which increases gravitational pull.

Front

What is the difference between day and night on Earth?

Back

Day occurs on the side of Earth facing the sun, while night occurs on the side facing away from the sun.

Front

What is a metalloid?

Back

A metalloid is an element that has properties of both metals and nonmetals, often used in semiconductors.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.