Quiz for 8th grade - Wave

The definition of a wave is ...

• A disturbance that transfers energy without transferring matter

• A vibration that propagates through space or a medium.

• The movement of particles from one place to another

• A force that causes objects to oscillate

What is the unit for frequency?

• meter

• Hertz

• second

• mol

What is the formula/equation for frequency?

• f = t / n

• f = n × T

• f = t + n

• f = n / t

What is the unit for period?

• meter

• Hertz

• second

• mol

What is the formula/equation for period?

• T = f/2
• T = 2πf

• T = f×2

• T = 1/f

What is the unit for wavelength?

• meter

• Hertz

• second

• mol

What is the unit for wave speed / velocity?

• kilogram per hour (kg/h)

• kilogram per meter³ (kg/m³)

• meter³ (m³)

• meters per second (m/s)

What is the formula/equation for finding the wave speed ?

• v = f λ

• λ / f = v

• v f = λ

• λ / v = f

The amplitude is ...

• 4 cm

• 8 cm

• 2 cm

• 0

The frequency is ...

• 2.5 Hz

• 1.5 Hz

• 0.5 Hz

• 0.25 Hz