Science Bimonthly Review - 7th Grade - Feb - March

What is electromagnetic radiation?

• Energy that moves only through liquids

• Energy that travels in the form of waves

• Energy found only on Earth

• Energy that can’t be detected

What type of electromagnetic radiation can humans see?

• Gamma rays

• Infrared light

• Visible light

• Radio waves

What happens when visible light passes through a prism?

• It disappears

• It separates into different colors

• It speeds up

• It becomes sound

What do we call the different colors with different wavelengths in visible light?

• Color radiation

• Visible light spectrum

• Prism colors

• Spectrum of sound

Which waves have the longest wavelengths?

• Radio waves

• Gamma rays

• X-rays

• Infrared rays

Which waves have the shortest wavelengths?

• Radio waves

• Gamma rays

• Microwaves

• Visible light

What do telescopes do?

• Create energy

• Make sound waves

• Collect and focus electromagnetic radiation

• Reflect radio signals

What type of telescopes use lenses and mirrors?

• Radio telescopes

• Sound telescopes

• Optical telescopes

• Gamma telescopes

What do reflecting telescopes use to collect light?

• Lenses

• Mirrors

• Crystals

• Sensors

What do refracting telescopes use to collect light?

• Lenses

• Mirrors

• Solar panels

• Gas