Chem 3 weeks assessment

Waves are a transfer of what?

• Heat
• Light
• Energy
• Food

What is frequency measured in?

• Milliseconds

• Miles

• Hertz

• Kilograms

The highest point on a wave is:

• the crest
• the trough
• the top
• the coast 

The height of the wave is known as the _____________.

• amplitude
• crest
• trough
• wavelength

The lowest point on a wave is the:

• Amplitude
• Crest
• Trough
• Wavelength

Which part of the EM spectrum can be seen with our eyes?

• visible light

• gamma rays

• x-rays

• infrared radiation

The 'R' in ROY G BIV stands for

• red

• respect

• recent

• retroactive

Scientists use a star's ______ to determine its composition

• color

• luminosity

• emission spectra

• temperature

Each element on the periodic table can be identified by its

• classification as a solid, liquid or gas.

• location on the table.

• ability to react to form compounds.

• unique spectral "fingerprint."

The spectroscope is a powerful tool used by astronomers to infer the nature of matter.

• True

• False