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Combine Science > Physics Mock > Flashcards

Physics Mock Flashcards

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1
Q

What’s a scaler and what unit does it measure it?

A

-Size or magnitude only
-measures in m/s (distance)

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2
Q

What is vector and what unit does

A

-magnitude and direction
-measure in m/s
-acceleration

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3
Q

What does the term displacement mean?

A

Distance but with direction

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4
Q

What was newton 1st law?

A

object remains in the same state of motion unless a resultant force, If all the forces are balanced the resultant force is zero.

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5
Q

What does the term friction mean?

A

When 2 object slide thought each other

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6
Q

What’s the equation that link with velocity acceleration and time

A

a=v-u
—-——
t

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7
Q

What is the equation link with time speed and distance

A

Speed=distance
——————
Time

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8
Q

Give 2 example of a scaler quantities

A

Distance
Mass
Temperature
Height
Speed
Time

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9
Q

Give 2 example of vector quantities

A

Weight
Displacement
Force
Velocity

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10
Q

What does the term resultant force mean?

A

Multiple force acting on a object at once

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11
Q

What does the term braking distance mean?

A

Distance of a vehicle travels in the time after the driver has applied a break.

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12
Q

What does the term stopping distance mean?

A

When the driver must bring the vehicle to a stop in the shortest distance possible

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13
Q

What does the term Reaction time

A

amount of time that takes places between when we perceive something to when we respond to it

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14
Q

Give 2 factors that can affect the reaction time

A

Tiredness
Drugs
Distraction
Alcohol

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15
Q

Give a reason why a driver applied breaking distance?

A

Poor road
Poor vehicle condition
More mass is in the vehicle

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16
Q

Give a type of energy stores

A

Magnetic
Internal
Chemical
Kinetic
Nuclear
Gravitational potential

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17
Q

What does the term energy efficiency mean?

A

transferred into useful called efficiency

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18
Q

How do you calculate energy efficiency?

A

Useful energy transferred
————————————-
Total energy supplies

If asked to give percentages times by 100

19
Q

How to keep warm

A

The choices between material that are poor conduct it has a low resistance

20
Q

What is the term renewable energy mean?

A

Energy which are able to quickly replenish themselves and can be use over and over again

21
Q

What is the term non-renewable energy mean?

A

Once sources are used up, they cannot be replaced/replalished.

22
Q

Give two examples of a non-renewable

A

Coal
Natural gas
Nuclear energy

23
Q

And advantages and the disadvantages of fossil

A

Advantages: Cheap
Disadvantage: Supplies are limited

24
Q

Which visible It has the lowest frequency and the highest frequency

A

Red light has the lowest frequency
Violet light has the highest frequency

25
Q

What is the order of a visible light sequence

A

Red , Orange , Yellow , Green , Blue , Indiago , Violet

26
Q

What does the term electromagnetic wave mean?

A

Vibrations between an electric field and magnetic field.

27
Q

What does all electromagnetic wave have?

A

Travels at the same speed
transverse energy as radiation

28
Q

Waves with a short wavelength has a…

A

A high frequency and high energy

29
Q

Waves with a long wavelength has a…

A

Short frequency and low energy

30
Q

What are the uses of a long wavelength?

A

Communication
Broadcasting television
Microwave

31
Q

What are the uses of a short wavelength?

A

Cooking
Communication

32
Q

What is the aim of investigate light refraction?

A

To see a clear ray reflection from the surface of the block

33
Q

Who made the atomic model?

A

Scientist, John Dalton . Carried series of experiments

34
Q

What is the relative mass of a 🫐proton🫐
and the relative charge?

A

Relative mass : 1
Relative charge : +1

35
Q

What is the relative mass of a 🫐neutron🫐
and the relative charge?

A

Relative mass:1
Relative neutron:0

36
Q

What is the relative mass of a 🫐electron🫐
and the relative charge?

A

Relative mass:-1
Relative charge:1/1860

37
Q

What is the term background radiation?

A

level of ionising radiation presented in the environment.

38
Q

What is the mass number that the first second and third layer of a atomic model?

A

1st: 2
2nd:8
3rd:8

39
Q

What does the term radioactive decay mean?

A

atomic nucleus loses energy by radiation.

40
Q

What does the term half-life mean?

A

Time required for a quantity of substance to reduce to half of an internal value

41
Q

What does the term half-life mean?

A

The time required for a quantity of substance to reduce to half of an internal value

42
Q

What are the dangers of radioactivity?

A

Skin burns
Cause of cancer

43
Q

What are the dangers EM radiation?

A

Damage DNA and cells

44
Q

What are the steps toward doing Investigating light refraction

A

1) Set up a ray box, slit and lens so that a narrow ray of light is produced.

2) lace a 30 centimetre (cm) ruler near the middle of a piece of plain A3 paper

3) Place the longest side of a rectangular acrylic polymer

4)Use the ray box to shine a ray of light at the point where the normal meets the block.

5) The angle between the normal and the incident ray is called the angle of incidence.

6) Use a pencil on the paper, mark the path of the incident ray

7)Remove the block. Draw a line joining each cross to the point where the normal meets

8)Repeat steps 2 to 7 for different angles of incidence

9) Measure the angle of incidence and angle of refraction for each block.

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