Forces and Energy
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Forms of Energy (Light, Sound, and Heat)
SubtopicForms of Energy (Light, Sound, and Heat) under Forces and Energy for Grade 4 IB.
Preview questions (no answers)
- 1.
Which of these is a common use for heat energy in the kitchen?
A.Washing the floor
B.Boiling water for tea
C.Looking in the mirror
D.Listening to the radio
- 2.
What can happen to light when it hits a lens in a pair of glasses?
A.It stops completely
B.It bends (refracts)
C.It turns into heat
D.It changes into a sound wave
- 3.
If you are standing 100 meters away from a person who yells, why is the sound softer than if you were standing 1 meter away?
A.The sound energy spreads out as it travels
B.The sound gets faster
C.The sound turns into light
D.The sound gains more energy
- 4.
Which of these is a source of both sound and light?
A.A silent flashlight
B.A ringing telephone with a glowing screen
C.A heated rock
D.A book
- 5.
If you want to reflect light to see around a corner, which tool would be most useful?
A.A magnifying glass
B.A prism
C.A mirror
D.A flashlight
- 6.
A thermometer works on the principle that most liquids ______ when they are heated.
A.Contract (shrink)
B.Expand (take up more space)
C.Change color
D.Turn into solids
- 7.
What form of energy is being used when a plant uses sunlight to make its own food?
A.Heat energy
B.Sound energy
C.Light energy
D.Kinetic energy
- 8.
If a light ray hits an opaque object, what is the result?
A.The light passes through easily.
B.The light is either reflected or absorbed, and a shadow is formed.
C.The light changes color and speeds up.
D.The light is magnified.
- 9.
What happens to the thermal energy of a hot cup of tea if it is left in a cold room?
A.The energy is destroyed and disappears.
B.The energy is transferred to the cooler air until they reach the same temperature.
C.The energy stays in the cup forever because it is trapped by the tea.
D.The energy turns into light and makes the tea glow.
- 10.
Which of the following is an example of 'Refraction'?
A.Seeing your face in a mirror.
B.A shadow forming behind a tree.
C.A magnifying glass making text look larger.
D.A dark shirt getting hot in the sun.
Download the worksheet for Forces and Energy - Forms of Energy (Light, Sound, and Heat) to practice offline. It includes additional chapter-level practice questions.
Introduction to Simple Circuits and Electricity
SubtopicIntroduction to Simple Circuits and Electricity under Forces and Energy for Grade 4 IB.
Preview questions (no answers)
- 1.
Which symbol represents a device that converts electrical energy into light energy?
A.The battery symbol
B.The wire symbol
C.The lamp symbol
D.The switch symbol
- 2.
In this circuit, which way does the electrical energy travel to reach the lamp?
A.Only through the air
B.Around the continuous loop of wires
C.Directly through the glass of the bulb
D.It stays inside the battery
- 3.
What is the purpose of the switch in this diagram?
A.To store electricity
B.To change the battery's voltage
C.To open or close the circuit
D.To protect the wires from heat
- 4.
Which of these materials would be the best conductor to close a gap in a circuit?
A.A glass marble
B.A rubber eraser
C.A plastic ruler
D.A metal paperclip
- 5.
In this circuit, if we add more lamps in a row (series), what happens to the brightness of each lamp?
A.They all get brighter
B.They all stay the same
C.They all get dimmer
D.Only the first one stays bright
- 6.
Why are wires usually covered in plastic or rubber?
A.To make them look colorful
B.To keep the electricity inside and prevent shocks (insulation)
C.To help the electricity flow faster
D.To keep the wires cold
- 7.
Which part of the circuit is responsible for 'consuming' the electrical energy and turning it into another form?
A.The battery
B.The wires
C.The lamp
D.The switch
- 8.
An inventor is creating a 'Dimmer Switch' game. She wants to see what happens to the brightness of Lamp 1 if she adds a second lamp (Lamp 2) into the loop as shown. How does the total resistance of the circuit change, and what is the effect on the first lamp?
A.Resistance decreases; Lamp 1 gets brighter.
B.Resistance stays the same; Lamp 1 stays the same.
C.Resistance increases; Lamp 1 gets dimmer.
D.Resistance increases; Lamp 1 gets brighter.
- 9.
During a science lab, Arjun accidentally connects a wire directly from one terminal of a battery to the other without including a bulb or a resistor. He notices the wire gets very hot quickly. What has Arjun created, and why is it dangerous?
A.A parallel circuit; it uses too much voltage.
B.An open circuit; electricity cannot flow.
C.A short circuit; too much current flows through the wire.
D.A series circuit; the energy is perfectly balanced.
- 10.
A classroom project requires a model house to have two lights that can be turned on and off independently. If the student uses the circuit design shown, what is the advantage of this specific arrangement over a simple series circuit?
A.The bulbs share the energy, making them last longer.
B.If one bulb is removed, the other bulb will still stay lit.
C.The battery will drain slower because there are two paths.
D.The wires will not get hot because the resistance is higher.
Download the worksheet for Forces and Energy - Introduction to Simple Circuits and Electricity to practice offline. It includes additional chapter-level practice questions.
Magnetism and Magnetic Fields
SubtopicMagnetism and Magnetic Fields under Forces and Energy for Grade 4 IB.
Preview questions (no answers)
- 1.
Why do some screwdrivers have magnetic tips?
A.To make them look shiny
B.To hold steel screws in place
C.To make them easier to grip
D.To measure the length of screws
- 2.
What happens if you hang a bar magnet by a string and let it swing freely?
A.It will spin forever
B.It will point North-South
C.It will point East-West
D.It will point toward the ground
- 3.
Which pole of a magnet is often colored red in diagrams?
A.South
B.North
C.East
D.West
- 4.
Can we see magnetic field lines with our naked eyes without any help?
A.Yes, they look like blue lines
B.Yes, they look like shadows
C.No, they are invisible
D.Only at night
- 5.
What would happen if you placed a magnet in a pile of mixed copper and steel screws?
A.All the screws would be attracted to the magnet.
B.None of the screws would be attracted to the magnet.
C.Only the steel screws would be attracted to the magnet.
D.Only the copper screws would be attracted to the magnet.
- 6.
If you rub a piece of iron with a strong magnet in one direction many times, what are you doing?
A.Cleaning the iron to make it shiny.
B.Aligning the magnetic domains to make the iron a magnet.
C.Removing the electricity from the iron.
D.Making the iron heavier.
- 7.
Why is the Earth's core important for its magnetism?
A.The core is made of solid rock that never moves.
B.The movement of molten iron and nickel in the core creates the magnetic field.
C.The core is a giant piece of plastic that stores energy.
D.The core attracts magnets from outer space.
- 8.
If you observe a magnet attracting a paperclip from 2cm away, but it cannot attract it from 5cm away, what does this conclude about the field?
A.The magnetic field has a limited range and strength decreases with distance
B.The paperclip is only magnetic when it is close to the magnet
C.The air between the magnet and paperclip is blocking the force at 5cm
D.The magnet's battery is running low at the further distance
- 9.
An 'alloy' is a mixture of metals. Which alloy is commonly used to make very strong permanent magnets?
A.Brass (Copper and Zinc)
B.Alnico (Aluminum, Nickel, and Cobalt)
C.Bronze (Copper and Tin)
D.Stainless Steel (Iron and Chromium)
- 10.
What would happen if you used a copper core instead of an iron core in an electromagnet?
A.The electromagnet would become much stronger
B.The electromagnet would be very weak or not work at all because copper doesn't amplify magnetic fields like iron
C.The copper would melt instantly
D.The electromagnet would only attract other pieces of copper
Download the worksheet for Forces and Energy - Magnetism and Magnetic Fields to practice offline. It includes additional chapter-level practice questions.
Forces of Motion: Friction, Gravity, and Push/Pull
SubtopicForces of Motion: Friction, Gravity, and Push/Pull under Forces and Energy for Grade 4 IB.
Preview questions (no answers)
- 1.
Which of these is NOT an effect of a force?
A.Making an object start moving
B.Changing the color of a rock
C.Making an object slow down
D.Changing the direction of a moving object
- 2.
When you open a window by sliding it upwards, you are applying which type of force?
A.Push
B.Pull
C.Friction
D.Gravity
- 3.
What is the name of the force that pulls all objects toward each other, especially toward large objects like planets?
A.Friction
B.Gravity
C.Push
D.Pull
- 4.
Which force acts against the motion of a boat moving through water?
A.Gravity
B.Friction (Water resistance)
C.Pull
D.Magnetism
- 5.
What can force change about an object?
A.Its speed only
B.Its direction only
C.Its shape only
D.Its speed, direction, and shape
- 6.
When you use a straw to drink, you are creating a difference in air pressure. The liquid moves up the straw. What type of force is primarily moving the liquid?
A.A push from the air outside the straw
B.Gravity pulling the liquid up
C.Magnetic attraction of the water
D.Friction between the straw and the water
- 7.
Which of these is an example of an object changing shape because of a force?
A.A ball rolling across a room
B.A person sitting on a foam cushion
C.A book sitting on a shelf
D.A magnet sticking to a fridge
- 8.
If you throw a ball in a room with no air (a vacuum), how would its motion differ from throwing it in a normal room?
A.It would travel further because there is no air resistance to slow it down.
B.It would fall faster because there is no air to hold it up.
C.It would float to the ceiling because there is no air to weigh it down.
D.It would not move at all because you need air to create a push force.
- 9.
Which of the following demonstrates a 'pull' force being used to stop an object's motion?
A.A catcher catching a baseball in their mitt.
B.A dog pulling back on a leash as a person tries to walk forward.
C.A person pushing a door shut.
D.A bowling ball hitting pins.
- 10.
A student wants to increase the friction of a wooden ramp for a toy car. Which modification would work best?
A.Sand the wood until it is perfectly smooth.
B.Glue a sheet of coarse sandpaper to the surface of the ramp.
C.Pour soapy water down the ramp.
D.Tilt the ramp at a steeper angle.
Download the worksheet for Forces and Energy - Forces of Motion: Friction, Gravity, and Push/Pull to practice offline. It includes additional chapter-level practice questions.