Wave properties

What phenomenon causes echoes?

• Transmission

• Refraction

• Reflection

• Diffraction

What property of sound waves is utilized by carpets, curtains, and furniture to make a room quieter?

• Reflection

• Transmission

• Absorption

• Diffraction

Why does a straw in a glass of water appear bent at the surface?

• The water absorbs certain light wavelengths.

• The light waves are reflected by the water's surface.

• The light waves change speed and direction when passing from water to air.

• The straw is actually bent due to water pressure.

What phenomenon explains why the sky appears blue?

• Reflection of blue light from the oceans.

• Absorption of all other colors by the atmosphere.

• Refraction of sunlight through atmospheric layers.

• Scattering of shorter blue wavelengths by atmospheric molecules.