Wave Long Test

What causes the blue color of the sky?

• emission of light
• reflection of light from land and water surface
• absorption of light from land and water surfaces
• scaterring of light by matter in the atmosphere

Why can you see someone clearly through a clear glass window but not through a frosted glass window?

• clear glass reflects light, frosted light absorbs light
• clear glass transmit light, but frosted light scatters light
• clear glass transmits some light, but frosted light absorbs all light
• clear glass scatters some light, but frosted glass transmits all light

What process forms an image in a mirror?

• absorbing light
• reflecting light
• refracting lights
• transmitting light

How does the color of an object affect the amount of energy it receives from sunlight?

• Light colored objects reflect more light and become warmer than darker objects.
• Light colored objects absorb more light and become warmer than darker objects
• Dark colored objects reflect more light and become warmer than lighter objects
• Dark colored objects absorb more light and become warmer than lighter objects

What type of energy is transmitted from the sun to earth through space?

• heat energy
• kinetic energy
• electrical energy
• electromagnetic energy

Why does a leaf look green in the summer?

• The leaf absorbs green light
• The leaf produces green light in its cells
• The leaf uses green light to make food in its cells
• The leaf reflects green light and absorbs other colors of sunlight

What controls the amount of light that enters the eye?

• iris
• pupil
• retina
• lens

Why do light waves get refracted?

• light waves move through different mediums at different speeds
• light waves bounce off obstacles
• light waves cannot go through some mediums
• waves of any kind spread around obstacles

Why does a white object appear to be white?

• it reflects all light colors in the spectrum
• it absorbs all light colors in the spectrum
• it refracts white light only
• it is white because there are no colors to reflect

Visible light, microwaves and x-rays are all the same kind of radiation in the EM spectrum. What makes them different from each other?

• their unique amplitudes
• their wavelengths and frequencies
• their wave speeds
• their colors