Grade 7 Ch 4 L 2 Light
10 Questions
| Total Attempts: 2195
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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