1st Semester Test 2024

As mass decreases, kinetic energy increases.

• True

• False

Moving a book to a lower shelf decreases its potential energy.

• True

• False

When you brake a bicycle, friction causes part of the mechanical energy to be transferred to thermal energy.

• True

• False

According to the law of conservation of energy, energy can be created or destroyed.

• True

• False

Refraction occurs when the amplitude of a wave changes as it passes from one medium to another.

• True

• False

You can hear sounds around the corner of a door due to the wave interaction called diffraction.

• True

• False

Sound travels faster at higher temperatures.

• True

• False

What conclusion can you draw from the information shown in this figure?

• The intensity of sound is greater in water than in air.

• Sound waves can move more quickly through liquids than solids.

• The frequency of sound increases with the speed of the wave.

• The speed of sound varies with the material through which the waves travel.

According to the figure shown, through which of the following do sound waves travel the slowest?

• air

• glass

• rubber

• water

Which of the following is NOT a way that waves interact with matter?

• Waves can be reflected by matter.

• Waves are affected by gravity.

• Waves can change direction when traveling from one material to another.

• As waves pass through matter, some of the energy they carry can be transferred to the matter.