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WorksheetsWaves and Technology
Total questions: 12
Worksheet time: 6mins
Based on the electromagnetic spectrum, which of the following do radio waves have?
High frequency and long wavelength
High frequency and short wavelength
Low frequency and long wavelength
Low frequency and short wavelength
Based on the electromagnetic spectrum, what do X-rays have?
Low frequency and long wavelength
High frequency and long wavelength
Low frequency and short wavelength
High frequency and short wavelength
Interference is when...
A wave loses energy as it travels through a medium.
A wave bounces off the boundary between one medium and another.
A wave bends as it moves from one medium to another.
Two waves overlap and combine.
Refraction is when...
A wave loses energy as it travels through a medium.
A wave bounces off the boundary between one medium and another.
A wave bends as it moves from one medium to another.
Two waves overlap and combine.
Attenuation is when...
A wave loses energy as it travels through a medium.
A wave bounces off the boundary between one medium and another.
A wave bends as it moves from one medium to another.
Two waves overlap and combine.
Reflection is when...
A wave loses energy as it travels through a medium.
A wave bounces off the boundary between one medium and another.
A wave bends as it moves from one medium to another.
Two waves overlap and combine.
Which of these waves would travel the farthest in air without losing too much information?
Long-wave radio waves
Short-wave radio waves
Long-wave microwaves
Short-wave microwaves
What type of wave would be able to carry more information faster?
Long-wave radio
Short-wave radio
Long-wave microwaves
Short-wave microwaves
Can electromagnetic waves ever be dangerous to your health?
Yes, and high frequency waves are the safest.
Yes, and high frequency waves are the most dangerous.
Yes, but frequency doesn't make a difference, only amplitude.
No, electromagnetic waves are always safe.
2 waves have the same amplitude, but opposite peaks and troughs. If they overlap, what will happen?
They will cancel out, leaving no wave.
They will make a wave with 2 times the amplitude.
They will make a wave with 1/2 the amplitude.
Both waves will exist in the same place.
In this picture, 3 different light sources (the bulbs) are shining through a lens. What makes the light and dark spots on the other side of the lens?
The lens focuses only some of the light beams.
Constructive and destructive interference make light and dark spots.
There must be spots in the lens that cast shadows on the background.
Reflection of the light beam in some places causes dark spots.
Mariel lives in an apartment. She notices that she has a really bad wi-fi signal when she uses the 2.4 GHz wi-fi, so she switches to the 5 GHz band from her router. The signal is much better with 5 GHz. Why could that be?
5 GHz has more energy, so it travels farther.
2.4 GHz is a faster data connection, so it's more delicate.
She might have a lot of neighbors using 2.4 GHz wi-fi and creating interference.
Her router's 2.4 GHz function must be broken, because otherwise this doesn't make sense.
