Science 7 Reviewer

Which of the following best defines motion?

• The state of rest

• The resistance to motion

• The force applied to an object

• The change in position of an object with respect to time

Which term describes the total distance covered by an object in a specific direction?

• Acceleration

• Displacement

• Speed 

• Velocity

Which refers to the length of the entire path travelled by an object?

• Displacement

• Distance

• Motion

• Time

Which of the following is defined as the displacement covered per unit time?

• Acceleration

• Displacement

• Speed

• Velocity

Which of the following describes how waves transfer energy?

• Through changes in shape

• Through changes in temperature

• Through mass displacement

• Through vibration or oscillation of particles

In which medium do sound waves travel the fastest?

• Air

• Steel

• Vacuum

• Water

What type of wave needs a medium to propagate?

• Electromagnetic waves

• Mechanical waves

• Microwaves

• Ultraviolet

What do we call the vibration that propagates as an acoustic wave through a transmission medium such as gas, liquid or solid?

• Song

• Sound

• Wave

• Zone

What determines the pitch of a sound wave?

• Amplitude

• Frequency

• Wavelength

• Velocity

Which of the following characteristics of sound corresponds to the height of a wave?

• Amplitude

• Frequency

• Wavelength

• Velocity