electromagnetic waves

1. Electromagnetic waves do not require a __________ to travel through.

• solid
• gas
• vacuum
• medium

1. The ___________ of an electromagnetic wave determines its color in the visible spectrum.

• frequency
• speed
• amplitude
• wavelength

1. The speed of light in a vacuum is approximately __________ meters per second.

• 100,000,000
• 500,000,000
• 1,000,000,000
• 299,792,458

1. The full range of electromagnetic waves is called the ___________.

• electromagnetic spectrum
• electromagnetic field
• electromagnetic range
• electromagnetic band

1. _________ is the electromagnetic wave with the longest wavelength.

• Ultraviolet
• X-ray
• Gamma ray
• Radio wave

1. ____________ waves have the highest frequency among electromagnetic waves.

• Gamma rays
• X-rays
• Microwaves
• Ultraviolet rays

1. Objects that emit their light, like the sun, produce ____________ waves.

• electromagnetic
• nuclear
• thermal
• mechanical

1. Electromagnetic waves transfer ___________ and energy.

• matter and energy
• sound and energy
• light and matter
• information and energy

1. The colors of the visible spectrum, in order from longest to shortest wavelength, are __________, orange, yellow, green, blue, indigo, and violet.

• Red
• Black
• White
• Pink

1. _________ is the device that uses electromagnetic waves to receive and transmit signals for communication.

• Refrigerator
• Television
• Mobile phone
• Microwave