Light reflection and refraction (Kevin Science))

1. A boy is looking at the full moon at night. Why can he see it?

• A) The moon produces its own light

• B) The moon reflects light from the Sun

• C) The moon refracts light from the Earth

• D) The moon absorbs all light

Why can we see the mountain on the water?

• Because of reflection of light coming from mountain

• Because of reflection of light coming from water

• Because of refraction of light coming from mountain

• Because of refraction of light coming from water

Maria is swimming in a pool and sees her friend standing outside. Her friend looks taller than usual. What causes this?

• A) Reflection of light

• B) Refraction of light

• C) Absorption of light

• D) The speed of light

3. Why does a red apple look red?

• A) It absorbs red light and reflects all other colors

• B) It reflects red light and absorbs all other colors

• C) It produces its own red light

• D) It changes the color of light

4. When does light change direction?

• A) When it moves in the same medium

• B) When it moves from one material to another

• C) When it moves in a straight line

• D) When it does not interact with objects

Value of the incident angle

• 55

• 35

• 45

• None of the above

Value of the reflected angle

• 30

• 40

• 55

• 35

Microwave radiation has more energy than Infrared radiation

• A) Yes, because microwaves are used to heat food, so they must have more energy

• B) Yes, because microwaves have a shorter wavelength than infrared radiation.
  

• C) No, because infrared radiation has a higher frequency than microwaves.

• D) No, because infrared radiation has a shorter wavelength and higher energy than microwaves.

Ultraviolet has higher energy than Visible light

• A) Yes, because UV light has a higher frequency than visible light.

• B) Yes, because UV light has a shorter wavelength, meaning more energy.

• C) No, because visible light is brighter than UV light.

• D) No, because UV light has a longer wavelength than visible light.

Radio wavelengths are the greatest; therefore, their energy is small.

• A) No, because radio waves have a high frequency and high energy.

• B) Yes, because radio waves have the lowest frequency in the electromagnetic spectrum.

• C) No, because all waves have the same energy regardless of wavelength.

• D) Yes, because longer wavelengths correspond to lower energy.