Final Science Revision - Unit 10 - Grade 4

What is the distance between two similar points in the repeating pattern of a wave?

• Amplitude

• Wavelength

• Frequency

• Medium

What measures how quickly a wave repeats in a given amount of time?

• Amplitude

• Reflection

• Frequency

• Refraction

What is the bouncing of waves off a surface called?

• Compression

• Reflection

• Refraction

• Transparency

In which type of wave is the motion of the disturbance parallel to the direction of the wave?

• Transverse wave

• Infrared light

• Longitudinal wave

• Rarefaction

What type of light has a very short wavelength and is invisible to our eyes?

• Infrared light

• Transparent

• Ultraviolet light

• Analog signals

What type of light has a very long wavelength and is invisible to our eyes?

• Transparent

• Analog signals

• Infrared light

• Ultraviolet light

What type of object blocks light completely?

• Transparent

• Translucent

• Opaque

• Optical fiber

What is produced when sound waves are reflected?

• Compression

• Refraction

• Echo

• Rarefaction

What is the change in speed and direction of a wave as it passes from one medium to another?

• Refraction

• Reflection

• Echo

• Compression

What is the amount of light that can pass through an object called?

• Transparency

• Frequency

• Wavelength

• Amplitude