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Mixed Physics Trivia Quiz

This quiz contains mixed physics questions. Enjoy!

A multiple-choice quiz by morticia1111. Estimated time: 4 mins.

Author
morticia1111

Time
4 mins

Type
Multiple Choice

Quiz #
265,891

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
7 / 10

Plays
8135

Last 3 plays: Guest 1 (9/10), rahonavis (10/10), ndturner (8/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Which instrument is used to measure gas pressure? Hint

A thermometer

Vernier calipers

An ammeter

A manometer

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Question 2 of 10

2. What is the function of a capacitor? Hint

It detects changes in temperature.

It stores electrical energy.

It detects changes in light intensity.

It produces a magnetic field.

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Question 3 of 10

3. Pressure increases with altitude.

True

False

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Question 4 of 10

4. Both gases and liquids are considered fully compressible.

True

False

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Question 5 of 10

5. Why is the pressure increased in the car tires after driving it? Hint

The force between air molecules increases.

Air molecules break up to form separate atoms.

The speed of the air molecules increases.

Air molecules expand.

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Question 6 of 10

6. What is a heliograph? Hint

Another name for a lie detector.

An instrument used to detect earth quakes.

An instrument used to communicate by light.

An instrument used to generate electricity.

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Question 7 of 10

7. What causes the aurora borealis? Hint

Light waves escaping the ionosphere.

Electrical particles from the sun hitting the earth's atmosphere.

Excess heat energy escaping the earth's surface.

Sound waves reaching the ozone layer.

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Question 8 of 10

8. Which object converts sound energy into electrical energy? Hint

A radio.

A loud speaker.

An electric bell.

A microphone.

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Question 9 of 10

9. In longitudinal waves, the vibrations are parallel to the direction the wave travels.

True

False

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Question 10 of 10

10. Why is a circuit breaker or fuse used in a circuit? Hint

It protects the wiring from circuit overload.

It improves the insulation of the wiring.

It allows spare current to be returned to the circuit.

It saves energy by reducing the current.

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Most Recent Scores

Nov 18 2024 : Guest 1: 9/10
Nov 15 2024 : rahonavis: 10/10
Nov 08 2024 : ndturner: 8/10
Nov 01 2024 : defjr: 10/10
Oct 29 2024 : Guest 172: 9/10
Oct 28 2024 : Guest 74: 10/10
Oct 24 2024 : Guest 96: 7/10
Oct 23 2024 : Guest 93: 6/10
Oct 01 2024 : Guest 213: 6/10

Score Distribution

Quiz Answer Key and Fun Facts

1. Which instrument is used to measure gas pressure?

Answer: A manometer

The manometer is a u-tube containing liquid used to measure gas pressure against atmospheric pressure. One end of the tube is joined to the gas supply which is then turned on. If the pressure of the gas is high, mercury is used. If the pressure of gas is low water is used to give a more accurate measurement.

2. What is the function of a capacitor?

Answer: It stores electrical energy.

A capacitor is a device which stores electric charge. A capacitor consists of two plates made of an electrically conducting material and separated by a non-conducting material such as mica, paper or air.

3. Pressure increases with altitude.

Answer: False

Pressure decreases with altitude.

4. Both gases and liquids are considered fully compressible.

Answer: False

Liquids are not considered to be compressible, hence they are used in hydraulic brakes.

5. Why is the pressure increased in the car tires after driving it?

Answer: The speed of the air molecules increases.

As you drive the car, the temperature of the tires is increased. As a result the molecules have more energy and they move faster and hit the walls of the container harder and more often and this makes the pressure greater.

6. What is a heliograph?

Answer: An instrument used to communicate by light.

The name heliograph comes from ancient Greek, meaning "sun" "writing".

7. What causes the aurora borealis?

Answer: Electrical particles from the sun hitting the earth's atmosphere.

The aurora borealis are beautifully coloured lights which sometimes can be seen in the sky near the north pole.

8. Which object converts sound energy into electrical energy?

Answer: A microphone.

Microphones convert sound waves into electrical voltages that are eventually converted back into sound waves through speakers.

9. In longitudinal waves, the vibrations are parallel to the direction the wave travels.

Answer: True

In longitudinal waves, the vibrations are parallel to the direction the wave travels. Electromagnetic and water waves are transverse waves. In these waves the vibration is at right angles to the direction the wave travels.

10. Why is a circuit breaker or fuse used in a circuit?

Answer: It protects the wiring from circuit overload.

The fuse is made of a piece of wire which melts if too much current runs through it. The fuse must then be replaced by a new one.
Circuit breakers contain an electromagnet which, when current exceeds the rated value, becomes strong enough to separate a pair of contacts and breaks the circuit. They operate much faster than fuses and can be reset.

Source: Author morticia1111

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