MOD 24-25 Science Semester 1 Exam

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium (like air or water) to travel through, while electromagnetic waves can travel through a vacuum (empty space) as well as through a medium.

Front

What do waves transmit?

Back

Waves transmit energy.

Front

What is a controlled experiment?

Back

A controlled experiment is an experiment that tests only one factor at a time by comparing a control group and an experimental group.

Front

What are digital waves?

Back

Digital waves are a type of wave that represents data in discrete values, making them more reliable for transmitting information.

Front

What are sound waves?

Back

Sound waves are mechanical waves that require a medium (like air) to travel and are used for transmitting sound.

Front

What is an independent variable?

Back

An independent variable is the factor in an experiment that is changed or controlled to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is the purpose of a control group in an experiment?

Back

The control group serves as a baseline to compare against the experimental group, helping to isolate the effects of the independent variable.

Front

What are transverse waves?

Back

Transverse waves are waves where the motion of the medium is perpendicular to the direction of the wave's travel.

Front

What are compressional waves?

Back

Compressional waves (or longitudinal waves) are waves where the motion of the medium is parallel to the direction of the wave's travel.