Physics Questions

Physics questions to help you revise.
For the answer hover your mouse over the word ‘Answer’

Question
1 What does the N stand for on a magnet? [tooltips keyword=”Answer” content=”North seeking pole!”]
2
Name is the metric unit for MASS?
 [tooltips keyword=”Answer” content=Kilogram or Gram]
3
Name the third planet from the sun?		 [tooltips keyword=”Answer” content=Earth]
4
Is the moon a satellite, planet or star?		 [tooltips keyword=”Answer” content=Satellite]
5 What is your approximate height: A: 1500mm, B: 15m, C: 500cm or D: 0.1km ?  [tooltips keyword=”Answer” content=1500mm]
6 What is the normal melting point of water?  [tooltips keyword=”Answer” content=0ºC]
7 Name an instrument you would use to measure temperature:  [tooltips keyword=”Answer” content=Thermometer]
8 What is your approximate mass: A: 4.5kg, B: 45 000g, C: 0.01tonne or D: 150kg ?   [tooltips keyword=”Answer” content=45 000g]
9 How many planets are there in our solar system? A: 5, B: 7, C: 8, D: 12, E: 15  [tooltips keyword=”Answer” content= “There are 8 planets in our Solar system”]
10 What force holds a planet in orbit around the sun  [tooltips keyword=”Answer” content=Gravity]
11
What is the unit for force		  [tooltips keyword=”Answer” The Newton]
12
In what unit is volume measured?		  [tooltips keyword=”Answer” content=”Cubic centimeters (cm3)”]
13 What is the unit for current?   [tooltips keyword=”Answer” content=”Ampere (or Amp)”]
14 What is the normal boiling point of water?  [tooltips keyword=”Answer” content=100ºC]
15 Name an instrument you would use to measure the volume of a liquid:  [tooltips keyword=”Answer” content=Measuring cylinder]
16 Two magnets, when brought together, repel. If the pole of one magnet is NORTH what is the other pole?  [tooltips keyword=”Answer” content=North]
17 Do magnetic field lines run from North to South or South to North?
  [tooltips keyword=”Answer” content=”North to South (the arrow on the line will point away from north)”]
18
Which planet is nearest to the sun?		  [tooltips keyword=”Answer” content=Mercury]
19 What happens to the current through a component if the voltage is increased? (INCREASE, DECREASE or NOT CHANGE)  [tooltips keyword=”Answer” content=”The current will INCREASE”]
20 What happens to the current in a circuit if the resistance is increased? A: increase, B: decease or C: stay the same  [tooltips keyword=”Answer” content=”If the resistance is increased the current will DECREASE”]
21 What form of energy is stored in a battery?   [tooltips keyword=”Answer” content=”Chemical energy”]
22 What form of energy is in a stretched elastic band
   [tooltips keyword=”Answer” content=”Strain (elastic) energy”]
23 What form of energy is stored in a spinning disk?   [tooltips keyword=”Answer” content=”Kinetic energy”]
24 During an eclipse of the sun: A: the Earth is between the Sun and the Moon, B: the Moon is between the Sun and the Earth  [tooltips keyword=”Answer” content=”Answer B: The moon is between the Sun and the Earth”]
25
Name the metric unit for ENERGY		   [tooltips keyword=”Answer” content= Joule]
26 Name an instrument you would use to help measure the thickness of a hair:  [tooltips keyword=”Answer” content=Microscope]
27 Name an instrument used for measuring CURRENT in a circuit:   [tooltips keyword=”Answer” content=Ammeter]
28 A bike waiting at the top of a hill would have what sort of energy
  [tooltips keyword=”Answer” content=Gravitational]
29 The tilt of the Earth is responsible for: A: the length of the day/night B: the length of the year or C:the change in seasons (you may pick more than one)
  [tooltips keyword=”Answer” content=”Answers A and C (not B)”]
30 What energy change takes place when coal burns
  [tooltips keyword=”Answer” content=”Chemical energy to Heat (internal) energy”]
31 There are two forces on a floating boat. Which force pushes up and helps the boat float?
  [tooltips keyword=”Answer” content=Upthrust]
32 An electric torch is switched on. What energy change takes place in the battery?  [tooltips keyword=”Answer” content=”Chemical energy to Electrical energy”]
33 What name is given to the bending of light.   [tooltips keyword=”Answer” content=Refraction]
34 What name is given to the kind of switch that can be closed using a magnet.  [tooltips keyword=”Answer” content=Reed switch]
35 If a guitar string is plucked harder what would happen: A: pitch increase, B:pitch decrease, C: amplitude increase  [tooltips keyword=”Answer” content=”Answer C: Amplitude increase (sound louder)”]
36 If a guitar string is made tighter what would happen: A: pitch increase, B: pitch decrease, C: amplitude increase  [tooltips keyword=”Answer” content=”Answer A: Pitch increase (sound higher)”]
37 What is the unit for voltage ?  [tooltips keyword=”Answer” content=Volt]
38 You hold a mass of 100g in the palm of your out-stretched hand. With what force does the mass press on your hand?  [tooltips keyword=”Answer” content=1″ Newton”]
39 Use your knowledge of particles moving to explain why a liquid evaporates quicker when it is warm.
  [tooltips keyword=”Answer” content =”Particles are constantly moving. When a liquid is warm the particles vibrate quicker and fly off the surface faster.”]
40 When levering a top from a paint can which is easier to use: a screwdriver with a short handle or one with a long handle (explain)
  [tooltips keyword=”Answer” content=”A long screwdriver is easier because the force is further away from the fulcrum.”]
41 Which would stretch the least A) a single spring B) two springs in parallel. C) two springs in series?  [tooltips keyword=”Answer” content=T”wo springs in parallel (side by side).
They would stretch half the amount of a single spring.”]
42 Which would stretch more A) a single spring B) two springs in parallel. C) two springs in series?  [tooltips keyword=”Answer” content=”Two springs in series.
They would stretch twice the amount as a single spring.”]
43 Which would have the greater volume, 1kg of water, 1kg of wood or 1kg of aluminium?.  [tooltips keyword=”Answer” content=”A kilogram of wood would have the most volume (we know this because  wood floats on water so must have a lower density)”]
44 A brick measures 5cm x 5cm x 20cm.
What is the volume of the brick?		  [tooltips keyword=”Answer” content=500cm3]
45 What is a galaxy and to which galaxy does our Sun belong?
  [tooltips keyword=”Answer” content=”A galaxy is a large collection of stars. Our Sun belongs to the Milky Way galaxy.”]
46 A brick rests on a table. You push the brick so that it starts to slide. How many forces act on the brick?   [tooltips keyword=”Answer” content=” 4 Forces    i.The table pushing on the brick. ii.The brick pushing on the table. iii.You pushing on the brick. iv.Friction slowing it down”]
47 A brick measures 5cm x 5cm x 20cm and has a mass of 1000g. What is the DENSITY of the brick?   [tooltips keyword=”Answer” content=2g/cm3 ]
48 A force can make an object do four things: slow down and change shape are two of them. What are the other two?   [tooltips keyword=”Answer” content=” Speed up or change direction”]
49 A man on a parachute is falling at a steady speed. There are two forces on him: Gravity (pulling down) and air resistance (pushing up).
Which force (if either) is the greater?
  [tooltips keyword=”Answer” content=”Neither. If the man is falling at a steady speed then  the forces on him must be the same size.”]
50 What is the usual unit of pressure?  [tooltips keyword=”Answer” content=”Newtons per square centimetre (N/cm2)”]
51 The Moon and planets do not give out any light so how are they visible to us on Earth?
  [tooltips keyword=”Answer” content=”Light from the Sun shines on the Moon (or planet) and is reflected back to Earth.”]
52 What is the unit for density?  [tooltips keyword=”Answer” content= “(g/cm3)Grams per cubic centimetre”]
53 What is the normal density of water?  [tooltips keyword=”Answer” content=”1 g/cm3″]
54 Which will have more resistance, a single light bulb, or two bulbs in series or two in parallel?  [tooltips keyword=”Answer” content=”Two bulbs in series have more resistance than a single bulb”]
55 What formula is used to calculate density?  [tooltips keyword=”Answer” content=Density = mass / volume]
56 What formula is used to calculate pressure?  [tooltips keyword=”Answer” content=”Pressure = force / area”]
57 You make an electromagnet by wrapping some wire around an iron nail. How could the strength of the magnet be made stronger?
  [tooltips keyword=”Answer” content=”You could make the magnet stronger 2 ways:
1. Increase the current through the wire (by using more cells). 2: Use more coils of wire”
]
58 How can one test to show that an object is a magnet?
  [tooltips keyword=”Answer” content=”The only test for a magnet is to see if it is repelled by another magnet”]
59 What force causes a moving car to slow down?  [tooltips keyword=”Answer” content=”Friction (or drag)”]
60 If a 600 grams of butter were taken to the moon would its weight GET LESS, INCREASE, or STAY THE SAME?   [tooltips keyword=”Answer” content=”The weight of the butter would be less on the Moon (the mass would stay the same)”]
61 A block of butter has a mass of 600g on the Earth. What would be the mass of the butter on the Moon?  [tooltips keyword=”Answer” content=”The mass would still be 600g (the mass of an object never changes)”]
62 Name the force that causes a tyres to grip the road  [tooltips keyword=”Answer” content=Friction]
63 What formula is used to calculate speed?
  [tooltips keyword=”Answer” content= “Speed = distance / time”]
64 A car takes 2 hours to travel 120km
What is the average speed of the car?		  [tooltips keyword=”Answer” content=”S=D/T
S= 120/2 = 60 km/hour”]
65 If a road is wet why are we meant to reduce our speed when driving or leave a graeter distnce between us and the car in front?  [tooltips keyword=”Answer”  content=”A wet road reduces the friction between the tyre and the road so the car is more likely to skid. This means we cant brake so hard and our stopping distance will increase.”]
66 A prism is a block of glass (or plastic) that will cause white light to split up into a rainbow of colours.
What do we call this process and what is the name given to the rainbow of colours?		 [tooltips keyword=”Answer” content=”The splitting of light into colours is called ‘dispersion’ and the rainbow is known as a ‘spectrum‘”]