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Baldragon Academy S3 Course > Survive The Cosmos COPY > Flashcards

Survive The Cosmos COPY Flashcards

1
Q

What is meant by a light year?

A

The distance that light could travel in one year.

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2
Q

How would you calculate a light year?

A

d=vt

d = 300 000 000 x (365 x 24 x 60 x 60)

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3
Q

Why do we use light years to measure distances in space?

A

Space is so massive we have to use a big unit to measure it.

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4
Q

State what is meant by a balanced force.

A

Equal forces acting in opposite directions.

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5
Q

What is Newton’s 1st Law?

A

If a balanced force acts on an object it will either remain stationary or continue to travel at a constant speed.

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6
Q

A car is travelling at 50ms-1. What can you say about the forces acting on it?

A

The forces are balanced.

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7
Q

What is the name of the force that always opposes motion?

A

Friction

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8
Q

What is meant by the resultant force?

A

The overall force acting on an object taking into account size and direction.

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9
Q

What is Newton’s second law?

A

Unbalanced Force = mass x acceleration.

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10
Q

A force of 1000N acts on an object. The mass of the object is increased. What happens to the acceleration?

A

The acceleration will decrease.

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11
Q

A force of 1000N acts on a 50kg object. The unbalanced force on the object is increased. What happens to the acceleration?

A

The acceleration will increase.

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12
Q

A force of 1000N acts on an object. The mass of the object is decreased. What happens to the acceleration?

A

The acceleration will increase.

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13
Q

A force of 1000N acts on a 50kg object. The unbalanced force on the object is decreased. What happens to the acceleration?

A

The acceleration will decrease.

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14
Q

What is Newton’s 3rd Law?

A

For every action force there is an equal and opposite reaction force.

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15
Q

Explain using Newton’s 3rd Law how a rocket takes off.

A

The rocket’s engines push the exhaust gases down. The exhaust gases push the rocket’s engines up.

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16
Q

Explain using Newton’s 3rd Law how a rocket can propel itself forward in space.

A

The rocket’s engines push the exhaust gases backwards. The exhaust gases push the rocket’s engines forwards.

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17
Q

What factors can effect the distance that a rocket could be launched?

A
  • Angle of launch,
  • Mass of rocket,
  • Force of launch
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18
Q

What is meant by mass?

A

A measure of the matter that makes up an object.

OR

A measure of the particles that make up an object.

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19
Q

What is meant by weight?

A

The force exerted by an object caused by the gravitational field strength.

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20
Q

What is gravitational field strength?

A

The force per kilogram

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21
Q

An astronaut goes to another planet. What will happen to the astronauts mass?

A

Nothing. It will remain the same.

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22
Q

An astronaut goes to another planet. What will happen to the astronauts weight?

A

The weight will change depending on the gravitational field strength.

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23
Q

An astronaut goes to the Moon. Explain what happens to his weight.

A

His weight will be less. The Moon has less gravitational field strength.

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24
Q

What does ‘F’ stand for?

A

Unbalanced force

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25
Q

What is the unit for force?

A

N, Newtons

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26
Q

What does ‘a’ stand for?

A

Acceleration

27
Q

What is the unit for acceleration?

A

metres per second per second, m/s2

28
Q

What does ‘m’ stand for?

A

mass

29
Q

What is the unit for mass?

A

kilograms, kg

30
Q

What does ‘W’ stand for?

A

Weight

31
Q

What is the unit for weight?

A

N, Newtons

32
Q

What does ‘g’ stand for?

A

Gravitational field strength

33
Q

What is the unit for gravitational field strength?

A

Newtons per kilogram, N/kg

34
Q

What is the energy change in a lamp?

A

Electrical to light

35
Q

What is the energy change in a buzzer?

A

Electrical to sound

36
Q

What can an LDR detect?

A

Changes in light level

37
Q

What can a thermistor detect?

A

Changes in temperature

38
Q

Explain how a NOT gate operates.

A

A NOT gate gives out NOT what you put in. (Put in a 0 get out a 1)

39
Q

Explain how an OR gate operates.

A

An OR gate gives out a 1 when one input is on, or the other input is on or both inputs are on.

40
Q

Explain how an AND gate operates.

A

An AND gate gives out a 1 when both inputs are on.

41
Q

In logic systems how is an ON represented?

A

1

42
Q

In logic systems how is an OFF represented?

A

0

43
Q

A 1 is the input to a NOT gate. What will the output be?

A

0

44
Q

An AND gate has Input 1 = 1, Input 2 = 0. What will the output be?

A

0

45
Q

An OR gate has Input 1 = 1, Input 2 = 0. What will the output be?

A

1

46
Q

An OR gate has Input 1 = 0, Input 2 = 0. What will the output be?

A

0

47
Q

An AND gate has Input 1 = 1, Input 2 = 1. What will the output be?

A

1

48
Q

A 0 is the input to a NOT gate. What will the output be?

A

1

49
Q

An OR gate has Input 1 = 0, Input 2 = 1. What will the output be?

A

0

50
Q

An AND gate has Input 1 = 0, Input 2 = 1. What will the output be?

A

1

51
Q

An OR gate has Input 1 = 1, Input 2 = 1. What will the output be?

A

1

52
Q

An AND gate has Input 1 = 0, Input 2 = 0. What will the output be?

A

0

53
Q

What are the two main forces acting on a rocket at take off?

A

Weight and Engine Thrust

54
Q

Which equation could be used to calculate the time, distance or speed of an object?

A

d = vt

55
Q

Which equation could be used to calculate the unbalanced force, mass or acceleration of an object?

A

F = ma

56
Q

Which equation could be used to calculate the weight, mass or gravitational field strength?

A

W = mg

57
Q

Which force should be used to calculate the acceleration of the block?

A

Engine thrust - Friction

58
Q

Which force should be used to calculate the acceleration of the rocket?

A

Engine thrust - weight

59
Q

What is the symbol for a NOT gate?

A
60
Q

What is the symbol for an AND gate?

A
61
Q

What is the symbol for an OR gate?

A
62
Q

Which logic gate is this?

A

AND Gate

63
Q

Which logic gate is this?

A

OR Gate

64
Q

Which logic gate is this?

A

NOT gate

Baldragon Academy S3 Course (3 decks)

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