Radio waves are received at a house at the bottom of a hill.
The waves reach the house because the hill has caused them to be 

• diffracted.
• radiated.
• reflected.
• refracted.

In a ripple tank, water waves move towards a barrier with a narrow gap.  
Which diagram best shows the waves beyond the barrier? 

• A
• B
• C
• D

Which is the best description of the speed of a water wave? 

•  the distance between one wave crest and the next
• the distance between the crest of a wave and a trough
•  the distance that a particle of water moves up and down in one second
• the distance that a wavefront moves along the surface in one second 

The diagram shows a wave.
How many wavelengths are there between X and Y? 

• ⅔
• 1
• 1 ½
• 3

Tags

NGSS.MS-PS4-1

The diagram shows a ball floating in a tank of water.
Which diagram shows the movement of the ball as the wave passes? 

• A
• B
• C
• D

Tags

NGSS.MS-PS4-1

The diagram shows the relative wavelengths for several types of electromagnetic energy.
Which type of electromagnetic energy has a shorter wavelength than ultraviolet waves? 

• visible light
• microwaves
• X-rays
• infrared

Two sets of water waves overlap as shown in the diagram.
From which two points are the sets of waves coming?

• P and S 
• T and R 
• Q and T 
• U and Q 

Waves travel more slowly on the surface of water when the water is shallow.
A person drops a stone into a pool at X. The diagram shows the first wavefront on the surface of the pool.
Which region of the pool is likely to be most shallow? 

• A
• B
• C
• D

The diagrams show different views of a water wave in a ripple tank.
Which letters represent a wavelength and a wavefront? 

• A
• B
• C
• D

Waves in deep water have a wavelength of 1.2 cm and a speed of 9.6 cm/s.  What is the frequency?

• 11.5 Hz
• 8.0 Hz
• 0.125 Hz
• 8.0 s

Tags

NGSS.HS-PS4-1