Unit Test — Unit test Answers

Franny drew a diagram to compare images produced by concave and convex lenses.Which belongs in the area marked X?

Which types of waves requires matter to carry energy?

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?

When light bends as it passes from one transparent object to another, the light is ________.Which best completes the statement?

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 refers to the number of wavelengths that pass a fixed point in a second?

Which statement best describes how waves carry energy?

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

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

Which best describes what happens when light traveling through air enters water at an angle?

The frequency of a wave does not change as it passes from one medium to another.What will most likely happen if a light wave moves from the air into a solid?

Which example would contain only longitudinal waves?

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?

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?

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

What is the motion of the particles in this kind of wave?

Natalia is studying a wave produced in her magnetics lab. This wave can move through the empty space in a vacuum and carries a lot of energy.What wave is Natalia most likely studying?

Danny drew a ray diagram to show the image of a plastic bottle produced by a concave lens. Which describes how the bottle should appear in the diagram?

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends toward the normal.