6th Science ACA Semester Review

Front

What force makes the toy cars finally come to a stop?

Back

Friction is the force that opposes the motion of the toy cars, causing them to eventually stop.

Front

Why do bubbles rise to the top when tablets dissolve in water?

Back

The bubbles are less dense than the water, which causes them to rise.

Front

What is the energy transformation that occurs in heat lamps used in restaurants?

Back

Electrical energy is transformed into radiant energy, which is then converted into thermal energy.

Front

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

Back

The ball has the greatest kinetic energy and the least potential energy at Position 2.

Front

How does kinetic energy change as an object moves faster?

Back

Kinetic energy increases as an object moves faster.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, causing it to slow down or stop.

Front

What is density?

Back

Density is the mass of an object divided by its volume, determining whether it will float or sink in a fluid.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, which increases with speed.

Front

What happens to energy in a heat lamp?

Back

Energy is transformed from electrical energy to radiant energy and then to thermal energy.