Physics P3 Quiz

A quiz on all of the topics from P3.

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  • Created by: Josh
  • Created on: 25-04-11 12:51
What causes an object to fall over?
A force that acts outside of the base of the object
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Complete the sentence: When rays parallel to the principal axis of a convex mirror strike the mirror, they are...
...reflected away from the focal point on the opposite side of the mirror as if the ray had emerged from that focal point.
2 of 22
Sound waves are tranverse waves. True or false?
False
3 of 22
The range of human hearing is what?
From 20Hz - 20KHz
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Ultrasound waves are non-ionising and are not partially reflected at the boundary between two media. True or false?
False
5 of 22
What can be done to an electric motor to make the armature coil rotate faster?
Use more coils of wire, use a stronger magnet, use a larger current
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Transformers do not work with direct current. True or false?
True
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What is a turning effect known as?
Moment
8 of 22
Describe what may happen to an exceptionally large star when it contracts after becoming a red giant.
It will contract and heat up, becoming a white dwarf; suddenly, it will reverse and explode in a supernova. A neutron star is left, comprised only of neutrons. This may turn into a black hole.
9 of 22
Object X orbits object Y in space. Assuming that their masses remain constant, what would happen to the strength gravitational attraction between them if the distance between them doubled?
It would be 1/4 of its previous strength.
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The lightest elements are formed during the stable state of a star's life and the heaviest elements are formed in supernovas. True or false?
True
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A transformer has 3000 turns of wire on the primary coil and 300 turns of wire on the secondary coil. Is this a step-up or step-down transformer?
Step-down
12 of 22
The force exerted on a wire due to the motor effect is greatest when the wire is perpendicular to the magnetic field lines. True or false?
True
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How long, approximately, has the Universe existed for?
13,000,000,000 years
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Using Newton's left hand rule, what is represented by the index finger?
Direction of field
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'Jewellery and other delicate items are sometimes cleaned by being placed in a bath of chemicals, and then having ultrasound waves sent through the chemicals. This causes ______, which cleans the jewellery.' What is the missing word from this sentence?
Cavitation
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Elements no heavier than silver are formed in the core of a star in its stable life phase. True or false?
False
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When light rays pass through the focal point of a converging lens and then pass through that lens, they _____. What is the phrase missing from this sentence?
... are refracted parallel to the principal axis.
18 of 22
The period of a satellite is the time it takes the satellite to complete one full orbit. True or false?
True
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A day on Mars is equivalent to 25 hours on Earth. Scientists plan to launch a geostationary satellite to orbit Mars. What will its period be?
25 hours
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If an object is in equilibrium, the sum of all the clockwise moments about any point on the object is equal to the sum of all of the anti-clockwise moments about that point. True or false?
True
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What process fuels a star during the largest proportion of its life?
Nuclear fusion
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Other cards in this set

Card 2

Front

Complete the sentence: When rays parallel to the principal axis of a convex mirror strike the mirror, they are...

Back

...reflected away from the focal point on the opposite side of the mirror as if the ray had emerged from that focal point.

Card 3

Front

Sound waves are tranverse waves. True or false?

Back

Preview of the front of card 3

Card 4

Front

The range of human hearing is what?

Back

Preview of the front of card 4

Card 5

Front

Ultrasound waves are non-ionising and are not partially reflected at the boundary between two media. True or false?

Back

Preview of the front of card 5
View more cards

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