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Physics > Assessment 4 > Flashcards

Assessment 4 Flashcards

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1
Q

Name a fuel used in cars

A

Petrol

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2
Q

Name a renewable source of energy

A

Wood, solar power.

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3
Q

Name a fuel used in power stations

A

Uranium

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4
Q

Name a solid fossil

A

Coal

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5
Q

In what unit is energy measured

A

Kilo joules (J)

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6
Q

What is potential energy?

A

Energy that is stored. There is gravitational potential energy and elastic potential energy.

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7
Q

What is thermal energy?

A

Thermal energy is basically heat energy. If heat is released from something it means that Thermal energy is released from it

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8
Q

What is kinetic energy?

A

Kinetic energy is energy from movement. For example when a car drives there is kinetic energy from the movement

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9
Q

What is electrical energy?

A

Electrical energy is energy what comes from an electrical circuit. It is fuelled by a batery or a cell.

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10
Q

What is chemical energy?

A

Chemical energy is energy that comes from chemicals. For example the chemicals in batteries release chemical energy to create electrical energy

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11
Q

What is light energy?

A

Light energy is the energy that comes from a light. It reflects off things or can be absorbed or go through things. For example the light energy from a light bulb

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12
Q

What does a watt (W) measure?

A

A watt measures power, equivalent to one joule per second. Corresponding to the rate electrical energy is used.

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13
Q

How many volts are passed along the cables of the national grid?

A

500,000 volts are passed along the national grid cables

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14
Q

How many volts are supplied to our homes from the national grid?

A

230 to 240 volts

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15
Q

What is mass?

A

Mass is the matter of something or someone

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16
Q

What is weight?

A

Weight is the force of gravity pulling you down towards the centre of the Earth.

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17
Q

What is the equation to calculate weight?

A

Weight=mass multiplied by gravity

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18
Q

What unit is mass measured in?

A

Mass is measured in kg

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19
Q

What unit is weight measured in?

A

Weight is measured in Neutons (N)

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20
Q

Name 2 negative impacts caused by fossil fuels

A
  1. It causes global warming because of the carbon dioxide released
  2. They are a non renewable source
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21
Q

How are ammeters and voltmeters connected

A

The are connected in parallel

22
Q

What is an orbital period?

A

is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun

23
Q

How long does the Earth take to spin on its axis once

A

It takes 23 hours and 56 mins

24
Q

How long does it take for the moon to spin on its axis once

A

27 days

25
Q

What happens to the temperature of planets as they get nearer to the sun

A

The temperature increases

26
Q

Why is there warmer weather in Ireland in the summer?

A

There is more hours of daylight and the sun is at an angle where the sun is concentrating more rays into a smaller area.

27
Q

When do we expect to see no moon?

A

When there is an eclipse (when another planet goes in front of the moon, blocking our view.)

28
Q

What is a constellation

A

A group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.

29
Q

What is a star?

A

a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

30
Q

What is the universe

A

all existing matter and space considered as a whole; the cosmos

31
Q

Put these in order from smallest to largest? A constellation, a star or the universe

A

A star, a constellation, the universe

32
Q

What is a polar satellite?

A

A spacecraft designed to study the polar magnetosphere and aurora

33
Q

What is a geostationary satellite?

A

is a circular geosynchronous orbit 36000 km above Earth’s equator and following the direction of Earth’s rotation.

34
Q

How long does the Earth take to spin on its axis once

A

It takes 23 hours and 56 mins

35
Q

How long does it take for the moon to spin on its axis once

A

27 days

36
Q

What happens to the temperature of planets as they get nearer to the sun

A

The temperature increases

37
Q

Why is there warmer weather in Ireland in the summer?

A

There is more hours of daylight and the sun is at an angle where the sun is concentrating more rays into a smaller area.

38
Q

When do we expect to see no moon?

A

When there is an eclipse (when another planet goes in front of the moon, blocking our view.)

39
Q

What is a constellation

A

A group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.

40
Q

What is a star?

A

a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

41
Q

What is the universe

A

all existing matter and space considered as a whole; the cosmos

42
Q

Put these in order from smallest to largest? A constellation, a star or the universe

A

A star, a constellation, the universe

43
Q

What is a polar satellite?

A

A spacecraft designed to study the polar magnetosphere and aurora

44
Q

What is a geostationary satellite?

A

is a circular geosynchronous orbit 36000 km above Earth’s equator and following the direction of Earth’s rotation.

45
Q

What is thrust?

A

Thrust is the force that propels a flying machine in the direction of motion.

46
Q

When an object has unbalanced forces acting, what happens?

A

an object that is not moving starts to move. an object that is moving changes speed or direction.

47
Q

When a force has no resultant force acting, what happens?

A

It keeps moving at a constant speed in the same direction.

48
Q

What are the inner planets made from

A

They are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum.

49
Q

How do you calculate density?

A

p=m/V, or density (p) is equal to mass (m) divided by volume (V).

50
Q

How do You calculate speed?

A

Speed=distance travelled/ time taken, or s=d/t

Physics (5 decks)

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