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Energy Practice Questions 8th
Test Description: Energy and Energy Transformations
Instructions: Answer all questions to get your test result.
1) Which of the following describes an apparent shift in the frequency of light emitted by a light source that is moving toward or away from an observer?
A
Law of Energy
B
Doppler Effect
C
Radiant Effects
2) Which of the following is a practically a part of the electromagnetic spectrum?
A
Stethoscope
B
X-Ray
C
Seismograph
3) What happens when a waves frequency decreases?
A
Wavelength remains the same
B
Wavelength decreases
C
Wavelength blows up
D
Wavelength increases
4) Which property of a sound wave changes when the speed of the vibration increases?
A
Decibels
B
Amplitude
C
Frequency
5) In which of the following situations will sound waves echo?
A
Bobby yells in the sky, the sound absorbs into the clouds.
B
Bobby yells down the hall, the sound reflects off the hall walls and travels back to him
C
Bobby yells down the hall, the sound is absorbed by the walls.
D
Bobby yells in the sky, the sound reflects off the clouds and travels back to him
6) A student claims that electrical energy is being transformed to thermal energy. Which of the following statements best supports the students claim?
A
Stove is plugged into an outlet and if a pan with ice is placed on the stove, the ice will melt
B
Particles in the burner vibrate more causing the burner to change from black to red
7) While listening to your favorite song, you get an Emergency Alert on your phone with a very high frequency, what would happen to the wave that it would produce?
A
More waves are being produced
B
Less waves are being produced
8) What happens when light shines on a car and you see the car as being red?
A
White light is being diffracted from the car to your eyes
B
White light is being reflected from the car to your eyes.
C
Red light is being reflected off the car to your eyes
D
Red light is being diffracted from the car to your eyes.
9) Which of the following is true?
A
As frequency goes down, Energy goes down, wavelength down
B
As frequency goes up, Energy goes up, wavelength goes down
C
As frequency goes up, energy goes up, wavelength goes down
10) When light changes speed and bends as it goes through another medium is called?
A
Refraction
B
Reflection
11) An echo is an example of:
A
Refraction
B
Reflection
12) Sound travels fastest through
A
Gases
B
Liquids
C
Solids
13) Which color has the highest frequency?
A
Blue
B
Violet
C
Red
14) When white light is shined through a prism it produces a rainbow. This is a form of _____________.
A
Reflection
B
Refraction
*select an answer for all questions
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