Grade 7 Ch 4 L 2 Light

10 Questions | By Jhogan5402 | Last updated: Mar 22, 2022 | Total Attempts: 2728

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Questions and Answers

1.

A material through which objects can be seen clearly
- A.
  
  Opaque
- B.
  
  Transparent
- C.
  
  Translucent
2.

A material through which objects appear blurry
- A.
  
  Opaque
- B.
  
  Transparent
- C.
  
  Translucent
3.

A material through which light does not pass
- A.
  
  Opaque
- B.
  
  Transparent
- C.
  
  Translucent
4.

Low-frequency, low-energy electromagnetic waves with a wavelength longer than 30 cm
- A.
  
  Radio Waves
- B.
  
  Infrared Waves
- C.
  
  Ultraviolet Waves
5.

Electromagnetic waves with a slightly shorter wavelength and higher frequency than light
- A.
  
  Radio Waves
- B.
  
  Infrared Waves
- C.
  
  Ultraviolet Waves
6.

Electromagnetic waves with a wavelength shorter than a microwave and longer than light
- A.
  
  Radio waves
- B.
  
  Infrared waves
- C.
  
  Ultraviolet waves
7.

The color of an opaque object is the color of light it
- A.
  
  Reflects
- B.
  
  Absorbs
- C.
  
  Transmits
8.

The intensity of light depends on
- A.
  
  Wavelength
- B.
  
  How much of it is absorbed
- C.
  
  How much energy it has
9.

Which structure SENDS signals about what you see to the brain?
- A.
  
  Lens
- B.
  
  Retina
- C.
  
  Cornea
10.

Light is a _______________ wave.
- A.
  
  Longitudinal
- B.
  
  Electromagnetic
- C.
  
  Mechanical

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