Science Grade 8 - Physics Unit Review

How many types of electromagnetic radiation are there?

• 1

• 3

• 5

• 7

Which type of electromagnetic radiation has the longest wavelengths?

• Visible light

• Radio waves

• Microwaves

• X-Rays

Which type of electromagnetic radiation has the shortest wavelength?

• Gamma rays

• X-Files

• Infrared radiation

• Ultraviolet radiation

What property of a wave is the opposite of wavelength?

• Frequency

• Amplitude

• Wavelength

• Pitch

Which type of electromagnetic radiation is used to cook food in a microwave oven?

• Radio waves

• Visible light

• Gamma rays

• Microwaves

Which 2 types of electromagnetic radiation can be the most harmful to us?

• Gamma rays

• X-Rays

• Visible light

• Microwaves

• Radio waves

Which type of electromagnetic radiation has the most energy?

• Radio waves

• Internet waves

• Gamma radiation

• X-Rays

According to the particle model of light, what is light made of?

• Photons

• Electrons

• Protons

• Atoms

According to the ray model of light, how does light travel?

• In a wave

• Around the edge of a circular shape

• In zig zags

• In a straight line

What are the 4 main types of interactions of light with matter?

• Reflection, assimilation, transformation, reformation

• Reflection, absorption, transmission, refraction

• Scatter, reflection and refraction

• Light only becomes visible as it interacts with matter