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That's Physics For Ya! - Part 2
Test Description: Study these concepts so you can pass Derith's final exam.
Instructions: Answer all questions to get your test result.
1) Which of the following statements is true?
A
South poles are attracted to north poles.
B
North poles attract north poles.
C
Negative charges are attracted to negative charges.
D
Positive charges attract positive charges.
2) Why might there be an adapter on a power cord?
A
To change the voltage and convert AC to DC
B
To make the current alternate more frequently and change the voltage
C
To make the current alternate more frequently
D
To change the voltage and convert DC to AC
3) What will happen to a neutrally charged, light metal sphere placed very near the Van de Graf?
A
It will always be repelled.
B
It will always be attracted.
C
It will be repelled and then attracted.
D
It will be attracted and then repelled.
4) What actually moves in a DC circuit?
A
Protons from the negative terminal to the positive one.
B
Electrons from the negative terminal to the positive one.
C
Electrons from the positive terminal to the negative one.
D
Protons from the positive terminal to the negative one.
5) In fluorescent tubes, how is the electricity changed into light?
A
The white coating on the inside heats up due to the electric current and then gives off photons as a result.
B
Electricity causes the molecules inside the tube to vibrate releasing the energy as light as their vibrations dampen.
C
Electricity causes the chemicals inside the tube to break chemical bonds releasing the light as the molecules break down.
D
Electrons in the gas are sent to higher energy levels and then release light as they fall back to the lower levels.
6) A circuit has one resistor and one battery. Which of the following will NOT decrease the current flow?
A
All of these answers will decrease the current.
B
Replacing the battery with one of lower voltage
C
Connecting another resistor in parallel with the first
D
Replacing the resistor with one of higher resistance
7) How can I increase the repulsive force between two charges?
A
Change the material from which they are made (without changing the charges)
B
Increase the charge of the second
C
Move them farther apart
D
Decrease the charge of the first
8) Which of the following occurs in induction?
A
Unlike charges are repelled.
B
The objects repel one another.
C
Like charges are attracted.
D
The originally charged object is attracted to the originally neutrally charged object.
9) What is the process by which a neutrally charged conductor can become electrically attracted to a charged object called?
A
Sonoluminescence
B
Combustion
C
Polarization
D
Quantum Chromodynamics
10) Which of the following is true of charges?
A
The proton and the positron (anti-electron) have the same charge.
B
Up and down quarks have equal and opposite charges.
C
The neutron and the electron have equal and opposite charges.
D
protons are electrically neutral.
11) When connecting a voltmeter and an ammeter in a circuit, which of the following describes how they should be connected to give proper readings?
A
Both should be connected in parallel.
B
The voltmeter should be in parallel, but the ammeter should be in series.
C
Both should be connected in series.
D
The voltmeter should be in series, by the ammeter should be in parallel.
12) As a source of sound gets closer to an observer, the sound that the observer hears is:
A
a lower frequency than the emitted frequency
B
a higher frequency than the emitted frequency
C
the same frequency as the emitted frequency
D
either higher of lower depending on the speed of the source
13) What is the value of Mach?
A
1029 m/s
B
104.3 m/s
C
343 m/s
D
686 m/s
14) Which of the following does not require a medium?
A
All of the answers require a medium.
B
electromagnetic waves
C
transverse waves
D
longitudinal waves
15) Which of the following is a similarity between mechanical waves and electromagnetic waves?
A
Both can travel through a vacuum.
B
Both require a medium.
C
Both can be longitudinal.
D
Both transfer energy.
16) Two tones are sounded. Which of the following is true of the higher tone?
A
It must have a higher amplitude.
B
It must have a longer wavelength.
C
None of the above are true.
D
It must have a lower frequency.
17) What is the reflection of a sound wave called?
A
echo
B
mirror
C
polarization
D
doppler
18) In which of the following does sound travel faster?
A
warm water
B
cold air
C
cold water
D
war air
19) What does it mean to be polarized?
A
to have transverse waves traveling in many non-parallel planes
B
to have transverse waves traveling in many parallel planes
C
to have longitudinal waves traveling in many parallel planes
D
to have longitudinal waves traveling in many non-parallel planes
20) Which of the following is NOT true?
A
Microwaves have more energy (per photon) than radio waves.
B
The visible spectrum has more energy (per photon) than infrared.
C
Gamma rays have more energy (per photon) than radio waves.
D
Radio waves have more energy (per photon) than ultraviolet light.
*select an answer for all questions
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