Lenses and electromagnetic wave

When a wave strikes an object and bounces off

For example, when light hits a shiny surface such as a mirror.

• Reflection

• Refraction

• Ricochet

• Transverse wave

What kind of wave is this?

• Transverse Wave
• Longitudinal Wave

Gamma rays are the highest frequency electromagnetic waves. Which are true about Gamma rays.

• They are used in 5G cellphone communication

• They are more dangerous to humans than UV rays

• They have a smaller wavelength than visible light

• Gamma rays carry less energy than radio waves

Light refraction causes the straw to appear in a different position inside this cup of water. Which of the following are also examples of refraction?

• Camera lenses

• Rainbows after rain

• Neon Lights

• Eye glasses

Which of the following are true of electromagnetic waves?

• They all travel at the same speed

• They need a medium to travel

• Only a small portion of them are visible to humans

• They all carry the same amount of energy

When a sound wave experiences reflection, we hear

• a louder sound

• a quieter sound

• echo

• nothing

True or False: Sound travels faster through solids than through liquids

• true

• flase

The image shows the tendency of a wave to spread out when passing through a narrow gap. This effect is called...

• diffraction

• polarization

• transmission

• absorption

Which wave has a greater frequency?

• wave B

• wave C

What does a wave carry?

• boats

• energy

• matter

• water