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Science Revision > Phsyics GCSE > Flashcards

Phsyics GCSE Flashcards

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1
Q

Describe a longitudinal wave?

A

Vibration travels parallel to the direction of the waves travel.

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2
Q

Describe a transverse wave?

A

Vibration travels perpendicular to the direction of the waves travel.

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3
Q

What type of experiment measures wave speed of transverse waves in liquid?

A

A ripple tank

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4
Q

What type of experiment measures wave speed in a solid?

A

Vibration generator

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5
Q

What type of experiment measures wave speed in a gas?

A

Person makes noise a certain distance, measure time of noise.

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6
Q

What is TEPMACK?

A

Thermal, Electrostatic, Potential(gravitational), Magnetic, Atomic, Chemical, Kinetic

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7
Q

What type of energy store does anything above ground always have?

A

Gravitational/Potential

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8
Q

How is energy dissipated to the surroundings?

A

Thermal energy

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9
Q

What order is the electromagnetic spectrum in?
(Lowest to highest)

A

Radio, Microwaves, Infrared, Visible light, Ultraviolet, X-rays and Gamma-rays

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10
Q

Uses of electromagnetic spectrum?

A

Radio- Communication
Micro- Cooking
Infrared- Thermal vision (army)
Visible Light- Sight
Ultraviolet- Sun-tanning
X-rays- Hospitals
Gamma-rays- Disinfection

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11
Q

What is refraction?

A

Light passing through one medium and through another

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12
Q

What is Scalar?

A

A quantity that is fully described by a magnitude.

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13
Q

What is a Vector?

A

A quantity that is fully described by a direction and a magnitude.

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14
Q

Examples of a Scalar and a Vector?

A

Scalar: Time
Vector: Gravitational field

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15
Q

Factors that affect brake speed?

A

Initial speed of vehicle
Tyre quality

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16
Q

Factors that affect thinking distance?

A

Drugs and alcohol

17
Q

How to calculate stopping distance?

A

1/2 initial velocity x time required to stop

18
Q

What is Newton’s first law?

A

Every object remains motionless until the act of an external force compels it to change its state.

19
Q

What is Newton’s second law?

A

More force generates more acceleration for a given mass, more mass means less acceleration from a given force.

20
Q

What is the typical speeds for walking, cycling and running?

A

Walking: 1.5m/s
Running: 3m/s
Cycling: 6m/s

21
Q

What is contamination?

A

Contamination is what happens when an object has radioactive material introduced to it.

22
Q

What is irradiation?

A

Purposefully exposing an object to radiation.

23
Q

What is background radiation

A

Everyday natural exposure to radiation, e.g. bananas, microwaves.

24
Q

How to measure radiation?

A

A Geiger Counter/ Muller Tube measured in millisievert

25
Q

How to calculate half life?

A

λ = amount of radioactivity/amount it decreases in time

26
Q

What happens to mass and protons during decay.

A

Mass number decreases by 4, proton number decreases by 2.

Science Revision (13 decks)

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