Physics Exam May 2022 Flashcards

1
Q

Which energy store increases as water is heated

A

Thermal

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2
Q

Which energy store increases when water is pumped uphill into a resovoir

A

Gravitational potential

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3
Q

One change that would reduce amount of carbon dioxide released by

Transport

A

Use electric cars to reduce amount CO2 released

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4
Q

One change that would reduce amount of carbon dioxide released by

Generating electricity

A

Use renewable energy resources like solar panels

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5
Q

Fill in gaps ___________

A

Nuclei

Neutrons

Gamma rays

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6
Q

Ewuation which links E, P and t

A

E = P x t

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7
Q

1 precaution to reduce hazard caused by radioactive waste for power stations

A

Build away from urban areas

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8
Q

Which graoh shows relationship between resustance at temp and length

A

Last one

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9
Q

Why cell was not electrical hazard to student

A

Voltage too low to cause harm as can’t produce a current high enough to be dangerous

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10
Q

How student’s hai stands up at end balloon

A

Negatuve charged dome transfers electrons to student

Student’s hair becomes negatively charged as electrons spread out

Same charges repel so stand up

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11
Q

Which energy store increases as bungee cords stretched

A

Elastic potential

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12
Q

Why actual max height reached by pod lower

A

Didn’t take into account the person inside

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13
Q

Which error caused if student’s eye was not in line level water

A

Systematic error

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14
Q

1 reason student should have used think string instead of thick

A

Thick string may trap air bubbles could affect accuracy by affecting buoyancy of water

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15
Q

Why without string measuring cylinder not accyrate volume

A

Ring may not have regular shape

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16
Q

How can students use readings from balance to determine mass of ring

A

Minus the 0.02 from mass of the ring

17
Q

Why pressure increased in syringe

A

Decreased volume for same amount of particles

Less space air particles collide more frequently with syring walls causing more pressure

18
Q

How does increase in temperature affect air particles inside piston

A

The mean kinetic energy of the particles increases

19
Q

Why source A emits radiation

A

Alpha radiation only travel short distance 1-2cm

Count rate for source A only starts increasing around 2cm

20
Q

How absorbing material can be used to show which type of radiation emitted by source B

A

Beta won’t travel through paper

Gamma will travel through

21
Q

1 safety precaution teacher to reduce radiation dose recieved

A

Stamd back

22
Q

1 safety precuation to avoid contamination

A

Wear gloves

23
Q

What colour is covering live wire in 3-core cable

A

Brown

24
Q

How would time taken for wire to melt be affected if some energy transferred to surroundings

A

Time taken would increase

More energy needed as lots is lost