Answers2001310 Earth Science Sem 1 - ReevesUnit Test

Unit Test — Unit test Answers

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The table below shows the wavelengths of visible light that correspond to different colors.A student analyzes the emission spectrum of an unknown element and observes strong lines at the following wavelengths: 656 nm, 486 nm, 434 nm.Which absorption spectrum is the student most likely viewing?

Question illustration
A
A line spectrum with one black line in purple, blue, light blue and red.
Option A
B
A line spectrum with 3 black lines in purple, one black line in blue, 2 black lines in light blue, one black line in orange and one black line in orange-red.
Option B
C
A line spectrum with 3 black lines in purple, 2 black lines in blue, 2 black lines in light blue, one black line in green and one black line in yellow.
Option C
D
A line spectrum with 4 black lines in blue, 6 black lines in green, 3 black lines in yellow and one black line in orange.
Option D
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What is occurring when a light wave goes through a pane of glass in a window?

A
absorption
B
transmission
C
constructive interference
D
destructive interference
64

A light bounces off the surface of a metal cup and shines in Harold’s eyes. Which best describes what is happening to the light waves in this scenario?

A
absorption
B
interference
C
refraction
D
reflection
65

A cell phone company relies on which kind of waves in order to provide service for its customers?

A
ultraviolet waves
B
infrared waves
C
gamma rays
D
microwaves
66

The diagram shows changing wavelengths along the electromagnetic spectrum.

Question illustration
A
Y: UltravioletZ: Radio
B
Y: Gamma raysZ: Visible light
C
Y: X-raysZ: Infrared
D
Y: RadioZ: Gamma rays
67

Which is the best analogy of a wave?

A
A wave is like building a ramp.
B
A wave is like shaking a hand.
C
A wave is like water rippling in a pond.
D
A wave is like knocking down a building.
68

Which phenomena support only the particle theory of light? Select 2 options.

A
reflection
B
bending around objects
C
traveling in a straight path
D
interference
E
photoelectric effect
69

What is the smallest packet of electromagnetic energy that can be absorbed or emitted?

A
a proton
B
an electron
C
a quantum
D
a wave
70

Which describes the results of the double slit experiment? Select 2 options.

A
Waves produced a diffraction pattern.
B
Results supported the wave theory of light.
C
Results demonstrated the relationship between electric and magnetic fields.
D
Beams of light separated as they passed through a prism.
E
Results supported the particle theory of light.

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