# Physics (IGCSE) Revision

82 Questions | Total Attempts: 1802  Settings  Based On IGCSE Physics course

• 1.
What is the equation for work done: so WORK DONE=
• 2.
(use'^' for power of)Complete the kinematic equation : v^2=
• 3.
Which of the following is a feature of sound waves? 1: longitudinal waves  2: transverse waves 3: can travel through a vaccum 4: cannot go through solids or liquids. 5: can go through a gas.  A: 1,3,4,5 B:2,4,5 C:4 only D:1 only E: 1,3,5
• 4.
Pressure in liquids is given by : (only use symbols)
• 5.
3000 Gigawatts = __________ watts
• A.

3 x 10^-12

• B.

3 x 10^9

• C.

3 x 10^12

• D.

3 x 10^-9

• 6.
Acceleration = velocity / time
• A.

True

• B.

False

• 7.
An object moving in the orbit of earth, travels at constant velocity. Which law from the Newton's laws of motion correctly describes this.
• A.

First Law

• B.

Second Law

• C.

Third Law

• D.

None

• 8.
Force = ___________ x ________________
• A.

F=mc^2

• B.

F= v/a

• C.

F=ma

• D.

F=work done/speed

• 9.
Mass of an object on Earth is 120kg. Calculate the weight of the person on the moon.[g(moon)= 1.6N/kg]. Remmember to use the correct units.
• 10.
Newton's third law describes that:
• A.

Force is proportional to mass and acceleration

• B.

Speed of an object is given by the distance divided by time

• C.

Weight is equal to mass times the force of gravity

• D.

Every action has a n equal but opposite reaction

• 11.
Speed is a : (tick two boxes)
• A.

Scalar

• B.

Vector

• C.

Has no direction

• D.

Has no magnitude

• 12.
Momentum = mass x _____________
• A.

Acceleration

• B.

Velocity

• C.

Displacement

• D.

Force

• 13.
Torque= force x perpendicular distance
• A.

True

• B.

False

• 14.
Principle of moments says describes that: the sum of the _________a_________  moments about any point is equal to the sum of ________b_______ moments abouth that point.
• A.

A: clockwise b: anticlockwise

• B.

A: forces b: fields

• C.

A: current b: time

• D.

A: upwards b:downwards

• E.

A: downwards b: upwards

• 15.
Type in the Hooke's Law:
• 16.
A barometer and a manometer use:
• A.

Mercury and chromium

• B.

Mercury only

• C.

Boiling water

• D.

Cold water

• 17.
Law of Floatation: If an object is floating freely, the weight of fluid it displaces is equal to its ________a______. And if a material floats, its _____b______ must be equal to or less than that of the fluid supporting it.
• A.

A: upthrust b: fluid displaced

• B.

A: fluid displaced b: upthrust

• C.

A: density b: weight

• D.

A: weight b: density

• 18.
A car moving at constant velocity has which of the following forces acting on it?
• A.

Thrust

• B.

Gravity

• C.

Air resistance

• D.

Momentum

• 19.
Efficieny =
• A.

Work done / energy input

• B.

Force x speed

• C.

Work done / time taken

• D.

Power input / power output

• 20.
Power =
• A.

Energy used / time

• B.

Work done / time taken

• C.

Efficiency / energy output

• D.

Force / time

• 21.
A boat is travelling at 35 km/hr. Froce used to push the boat in the water in 350N. Calculate the useful power output of the boat.
• A.

1050W

• B.

10500W

• C.

10W

• D.

0.1W

• 22.
Random motion of large visible particels, caused by smaller invisible ones is called:
• A.

Diffusion

• B.

Condensation

• C.

Brownian motion

• D.

The Butterfly effect

• 23.
Describe how a thermistor thermometer works.
• 24.
Convert: (i) 0 *C to Kelvin (ii) 341 K to *Celcius
• A.

(i)273K (ii)68*C

• B.

(i)-273K (ii)614*C

• C.

(i)0 K (ii)-341*C

• D.

(i)271 K (ii)341*C

• 25.
Define conduction
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