Light is emitted when electrons

• move from one atom to another.

• collide with one another, releasing energy.

• move from a lower energy level to a higher energy level.

• move from a higher energy level to a lower energy level.

Which statement best describes what waves are?

• wavy lines on graph paper
• disturbances that transfer energy
• light energy that changes particles of matter
• circles that move out from a central place 

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

• Gamma Rays
• Radio Waves
• Visible Light
• Infrared rays

Which color has the longest wavelength?

• Yellow

• Red

• Green

• Purple

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

Of the visible spectrum, what color has the longest wavelength?

• Blue

• Green

• Yellow

• Red

• Violet

Light is a type of energy that travels as an ______________ ____________.

• Longitudinal Wave

• Electric Current

• Electromagnetic Wave

• Magnetic Wave

Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

• microwaves
• visible light
• gamma rays

For waves in any medium, as the wavelength decreases, what happens to the frequency?

• It also decrease
• It stays the same
• It increases

Which of the following has wavelengths longer than microwaves?

• Infrared waves
• Radio waves
• Visible light