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Paper 1 > Physics > Flashcards

Physics Flashcards

1
Q

Is geothermal a renewable or non renewable energy resource?

A

Renewable

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2
Q

How are voltmeters connected in a circuit

A

In parallel around the component you are measuring the potential difference of

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3
Q

What is the equation that links current, resistance and potential difference

A

V=IR

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4
Q

How do you convert mA to A

A

Divide by 1000

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5
Q

What sort of error would be caused by the same equipment and method giving two different readings

A

Random

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6
Q

What does a step-up transformer do

A

Increase potential difference

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7
Q

How do step-up transformers improve efficiency in the national grid

A

Decreases current so reduces energy and loses as heat in the cables

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8
Q

What is the circuit symbol for an LDR

A

(Picture)

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9
Q

What is the relationship between light intensity and resistance for an LDR?

A

As light intensity decreases resistance increases.
10

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10
Q

What is the equation that links power current and resistance

A

P= I2 XR

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11
Q

What is peer view

A

Scientists check each other’s work before publishing to the public

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12
Q

What property of nuclear radiation causes an increased risk of cancer?

A

Ionising

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13
Q

What is the unit for activity of a radioactive source?

A

Bq

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14
Q

What is the range in air of alpha radiation?

A

Few cms

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15
Q

What is the range in air of beta radiation?

A

Several ms

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16
Q

What is the range in air of gamma radiation?

A

Several kms

17
Q

Define half life

A

The time taken for half the nuclei in a sample to decay.

18
Q

Why can radioactivity never be predicted?

A

It is a random process

19
Q

What is the equation that links gravitational potential energy, mass, gravitational field strength and height?

A

Ep= mgh

20
Q

In terms of energy what is a closed system?

A

A system which no energy enters or leaves

21
Q

What is the relationship between the temperature and pressure of a gas?

A

As temperature increases so does pressure

22
Q

What causes pressure in gases

A

Force of the particles colliding with the walls of the container

23
Q

What is the equation that links mass, density and volume?

A

Density= mass/volume

Paper 1 (11 decks)

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