Refraction and Lenses — Unit test Answers

How does a convex mirror form an image?

Which describes an image that a concave mirror can make?

Four waves are produced when a harp is strummed at four different times.Which wave will produce the highest pitch?

If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime?

When all else remains the same, what effect would decreasing the focal length have on a convex lens?

Atomic bombs send out a shock wave when they are detonated. This occurs because the bomb’s detonation superheats the air particles nearby, which cause them to bump into other air particles that further the wave.Which statement can most likely be made about the shock waves of atomic bombs?

Which part of the electromagnetic spectrum has the longest wavelengths?

Which example would contain only longitudinal waves?

What do diffraction and refraction have in common?

What is occurring when two waves traveling along the same medium meet and cancel each other out?

Changes in which property are heard when the Doppler effect occurs?

Where do the three rays in a ray diagram start?

Prisms separate ________ light, such as that from the Sun, by wavelength.Which best completes the statement?

Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own food.Under which color of light will plants be least likely to make food?

Henri draws a wave that has a 4 cm distance between the midpoint and the trough. Geri draws a wave that has an 8 cm vertical distance from the trough to the crest.Which statement best describes the energy in Henri and Geri’s waves?

Which statement can be made about waves A and B?

Sound waves are produced when something is caused to

Which equation should be used to calculate the speed of a wave?

After the 1600s, how did observations of light being refracted change the way most scientists thought about light?

When sound is created, it travels to the ear through a