Wk4-CBScience-SoundsHomework-Grade 5C

What do you call the characteristics or conditions that are present in different amounts or types and could be changed or not in an experiment or investigation?

• materials

• sources

• knowledge

• variables

How are sounds made?

• Sounds are made when things vibrate.

• Sounds are made through physical forces such as pushing or pulling.

• Sounds are made when sound sources allow themselves to produce sound.

• Sounds are made through natural energy sources such as sunlight, wind, and water.

Which of the following is NOT a sound source itself?

• animals

• paper

• fireworks

• transportation

Sound is a kind of _________?

• energy

• matter

• vibration

• living thing

Which of the following produces a very high - pitched ultrasonic sound which humans cannot hear and only those of their own kind?

• A and B

• C and D

• Only B

• Only C

It is the unit used to measure sound.

It is the act of making sounds quieter.

They can be used to tune stringed instruments.

It is an instrument used to measure the volume of sound.

They have hollow pipes for air vibrations to create sound.