Grade 7 Ultimate Q2 BMA Review

Front

What is the fastest medium for light to travel through?

Back

Light travels fastest through air.

Front

What does the Law of Conservation of Energy state?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What happens to energy when a rechargeable electric toothbrush is plugged in?

Back

Electrical energy is transformed to chemical energy.

Front

Why is observing animals in their natural habitat not considered an experiment?

Back

Because the observer does not test variables.

Front

What occurs when a hot object is placed in a cold substance?

Back

Heat flows from the hot object to the cold substance.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object in motion.

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds.

Front

Explain the concept of heat flow.

Back

Heat flows from areas of higher temperature to areas of lower temperature.

Front

What is an experiment?

Back

An experiment is a scientific procedure undertaken to test a hypothesis.

Front

What is the difference between observation and experimentation?

Back

Observation involves watching and recording data without manipulating variables, while experimentation involves testing variables.