8.P.3

The wavelengths of radio waves are much _______________ than the wavelength of microwaves. Therefore, radio waves carry much __________ energy than a microwave.

• longer, more

• longer, less

• shorter, more

• shorter, less

Boom! Boom! Boom! The car passed Steve's house and the blaring music from the car's radio rattled the windows. How would a scientist explain this to Steve

• Sound waves reflected off of the windows of the house.

• Sound waves transmit air particles that bounce off of the windows.

• Sound energy traveled as waves and caused the windows to vibrate.

• Sound energy traveled as particles and vibrated the window glass.

The picture lists light waves from left to right in order of highest to lowest energy. Which region of the electromagnetic spectrum has the longest wavelength?

• UV

• Gamma Rays

• Radio Waves

• Visible Light

Identify the characteristic of a transverse wave that doubled from wave A to wave B.

• amplitude

• crest

• trough

• wavelength

Although you can see the pencil, it appears broken in the glass of water. This is because

• electromagnetic waves cannot travel through solids.

• electromagnetic waves travel at different speeds through different media.

• electromagnetic waves compress more when they travel through denser media.

• electromagnetic waves get closer together when they go through dense media like glass.

In which medium would sound travel the fastest?

• across a room

• in a swimming pool

• through outer space

• through a railroad track

Many new headphones on the market are called "noise reducing" because they take sound waves that come in from the outside and add a sound wave to it that is exactly opposite (out of phase) to it, these add together to make no noise. This is a good example of sound wave

• absorption

• diffraction

• interference

• refraction

If the two waves shown in the diagram were to combine. What is the smallest wave they can produce?

• A wave with an amplitude of 3

• A wave with an amplitude of 2

• A wave with an amplitude of 1

• No wave at all, they would cancel each other

Assume the light wave directed at the paper is white light and the paper contains pigments that absorb the wavelengths of red-orange-yellow-green-blue-indigo-violet. What color will the paper appear to human eyes?

• black

• brown

• green

• white

The leaves of a plant appear to be green because light waves are

• reflected

• absorbed

• both absorbed and reflected

• neither absorbed or reflected