Forces and Energy
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Forms of Energy (Heat, Light, Sound, Electrical)
SubtopicForms of Energy (Heat, Light, Sound, Electrical) under Forces and Energy for Grade 5 IB.
Preview questions (no answers)
- 1.
What type of energy is moving through the wires in your home?
A.Sound energy
B.Thermal energy
C.Electrical energy
D.Light energy
- 2.
When light hits a dark, rough surface like asphalt, most of it is:
A.Reflected
B.Refracted
C.Absorbed
D.Magnified
- 3.
Which of these is a natural source of heat?
A.An electric heater
B.The Sun
C.An oven
D.A microwave
- 4.
If you tighten the skin on a drum, what will happen to the sound it makes?
A.It will have a lower pitch
B.It will have a higher pitch
C.It will be quieter
D.It will not make any sound
- 5.
Which of the following is true about light reflecting off a mirror?
A.The image is upside down.
B.The angle of incidence equals the angle of reflection.
C.The mirror absorbs all the light colors.
D.Light travels slower after it hits the mirror.
- 6.
What do we call the materials that do not allow electricity to flow through them easily?
A.Conductors
B.Insulators
C.Generators
D.Radiators
- 7.
When you see a rainbow in the sky, what is acting as the prism to bend the light?
A.Clouds
B.Dust particles
C.Water droplets
D.The Moon
- 8.
How do sound waves change when a person speaks more loudly without changing the pitch?
A.The frequency increases.
B.The wavelength decreases.
C.The amplitude increases.
D.The speed of the sound increases.
- 9.
You are building a circuit to light a bulb. If you use a very long, thin wire instead of a short, thick wire of the same material, what will happen?
A.The bulb will be brighter because there is more wire for energy.
B.The bulb will be dimmer because long, thin wires have more resistance.
C.The bulb will be the same brightness.
D.The bulb will not light at all because thin wires cannot carry energy.
- 10.
Which statement correctly describes the relationship between light and heat when sunlight hits a solar oven?
A.The light is reflected to create more light energy.
B.The light energy is absorbed by the dark interior and transformed into thermal energy.
C.The light energy is refracted into sound energy to cook the food.
D.The solar oven creates energy out of nothing.
Download the worksheet for Forces and Energy - Forms of Energy (Heat, Light, Sound, Electrical) to practice offline. It includes additional chapter-level practice questions.
Transfer and Transformation of Energy
SubtopicTransfer and Transformation of Energy under Forces and Energy for Grade 5 IB.
Preview questions (no answers)
- 1.
When you use a microwave, electrical energy is changed into what to cook your food?
A.Sound energy
B.Microwave radiation (Thermal energy)
C.Elastic energy
D.Gravitational energy
- 2.
What type of energy do humans get from eating an apple?
A.Light energy
B.Chemical energy
C.Nuclear energy
D.Electrical energy
- 3.
Which form of energy is easily seen as it travels from a lamp to your eyes?
A.Thermal energy
B.Light energy
C.Sound energy
D.Chemical energy
- 4.
In a hydroelectric dam, falling water is used to turn a turbine. This turns kinetic energy into:
A.Electrical energy
B.Chemical energy
C.Light energy
D.Sound energy
- 5.
Which of these objects has the most gravitational potential energy?
A.A ball on the ground
B.A ball halfway up a hill
C.A ball at the top of a high hill
D.A ball rolling in a valley
- 6.
What energy transformation happens in an electric iron as it gets hot?
A.Electrical energy to thermal energy
B.Chemical energy to electrical energy
C.Kinetic energy to electrical energy
D.Thermal energy to light energy
- 7.
When a firework explodes in the sky, chemical energy is transformed into which three forms?
A.Sound, light, and thermal energy
B.Electrical, magnetic, and potential energy
C.Nuclear, gravitational, and sound energy
D.Elastic, light, and electrical energy
- 8.
Why does a piece of ice melt faster on a metal plate than on a plastic plate, even if both plates are at room temperature?
A.The metal plate is a better conductor, transferring thermal energy from the air to the ice more quickly.
B.Plastic is a natural coolant and keeps the ice from melting.
C.The metal plate creates its own heat when it touches the ice.
D.Metal attracts more radiant energy from the lights in the room.
- 9.
A student builds a simple circuit with a battery, a switch, and a light bulb. When the switch is open, why doesn't the bulb light up?
A.The chemical energy in the battery has nowhere to go, so it remains as potential energy.
B.The electrical energy is being destroyed at the gap in the switch.
C.The potential energy in the battery is converted into thermal energy instead.
D.The circuit is not closed, so the transformation from chemical to electrical energy cannot happen.
- 10.
Which of these energy sources is considered non-renewable because its energy was stored over millions of years and cannot be replaced quickly?
A.Biomass
B.Natural Gas
C.Wind
D.Geothermal
Download the worksheet for Forces and Energy - Transfer and Transformation of Energy to practice offline. It includes additional chapter-level practice questions.
Simple Machines and Work
SubtopicSimple Machines and Work under Forces and Energy for Grade 5 IB.
Preview questions (no answers)
- 1.
Which simple machine consists of a stiff bar or board that rests on a support point?
A.A pulley
B.A lever
C.A screw
D.A wedge
- 2.
In the International System of Units, work is measured in:
A.Grams
B.Joules
C.Meters
D.Seconds
- 3.
If you turn the axle of a wheel and axle machine, what happens to the wheel?
A.It turns as well
B.It stays still
C.It falls off
D.It changes color
- 4.
A system of several pulleys working together to lift very heavy loads is called a:
A.Wheel and axle
B.Block and tackle
C.Lever arm
D.Fulcrum
- 5.
Which of these is a characteristic of all simple machines?
A.They all use electricity to function
B.They all reduce the total amount of energy needed to do work
C.They all change the magnitude or direction of a force
D.They all have at least one moving wheel
- 6.
If you increase the length of the handle on a wrench, what effect does it have when trying to loosen a tight bolt?
A.It decreases the torque applied
B.It makes the bolt heavier
C.It increases the leverage, making it easier to turn
D.It increases the friction on the bolt
- 7.
Which simple machine is often found at the base of a lightbulb?
A.Lever
B.Screw
C.Wedge
D.Pulley
- 8.
A bicycle uses gears and a chain to move. If the front gear (connected to the pedals) is larger than the back gear (connected to the wheel), what is the result?
A.The wheel turns more times than the pedals for every rotation.
B.The pedals require less force to turn.
C.The bike moves slower but is easier to pedal uphill.
D.The distance the bike travels per pedal stroke is decreased.
- 9.
Which of the following describes the relationship between work and energy?
A.Work is the transfer of energy.
B.Energy is the rate at which work is done.
C.Work and energy are unrelated concepts.
D.Energy is destroyed when work is performed.
- 10.
A force is applied to move a box. If of work is done, which of the following must be true?
A.The box did not move any distance.
B.The box moved in the opposite direction.
C.The force was applied for too short a time.
D.The box is too heavy to move.
Download the worksheet for Forces and Energy - Simple Machines and Work to practice offline. It includes additional chapter-level practice questions.
Forces (Gravity, Friction, Magnetism)
SubtopicForces (Gravity, Friction, Magnetism) under Forces and Energy for Grade 5 IB.
Preview questions (no answers)
- 1.
When a ball rolls across a carpet, it stops sooner than on a wooden floor. What is the carpet doing?
A.Exerting more gravity
B.Exerting more friction
C.Exerting less friction
D.Creating a magnetic field
- 2.
Earth is like a giant magnet. This is because it has a core made of:
A.Solid rock and water
B.Molten iron and nickel
C.Gas and dust
D.Plastic and glass
- 3.
What force acts on a boat to slow it down as it moves through water?
A.Gravity
B.Water resistance (a type of friction)
C.Magnetism
D.Pushing force
- 4.
A magnet is used in a recycling center to separate metals. Which metal would the magnet pick up?
A.Aluminum soda cans
B.Copper wiring
C.Iron food cans
D.Gold rings
- 5.
A student wants to compare the strength of three different magnets. They measure the maximum distance each magnet can be from a steel paperclip before the clip is pulled toward it. Based on the experimental results shown in the diagram, which conclusion is correct?
A.Magnet B is the strongest because it requires the paperclip to be at the closest distance ().
B.Magnet C is the strongest because it can attract the paperclip from the furthest distance ().
C.Magnet A is stronger than Magnet C because its pulling distance is in the middle of the others.
D.The strength of a magnet is determined only by its physical size, not by the distance of its pull.
- 6.
Why does a ball eventually stop rolling across a level grass field?
A.It runs out of force.
B.The force of gravity pulls it to a stop.
C.Friction between the ball and the grass opposes the motion.
D.The ball's magnetic energy is depleted.
- 7.
How do magnetic poles behave?
A.Like poles attract, and opposite poles repel.
B.Like poles repel, and opposite poles attract.
C.All poles attract each other.
D.Magnetic poles only interact with gravity.
- 8.
A metal paperclip is attracted to a magnet. If the paperclip is then moved further away from the magnet, what happens to the force of attraction?
A.The force stays the same as long as the magnet is still there.
B.The force increases because the magnetic field expands.
C.The force decreases as the distance from the magnet increases.
D.The force turns into a repulsive force (push).
- 9.
Which of these statements best describes the relationship between mass and gravity?
A.Only planets have enough mass to have gravity.
B.The more mass an object has, the stronger its gravitational pull.
C.Gravity only pulls on objects that have a very small mass.
D.Mass and gravity are the same thing measured in different units.
- 10.
What is the primary reason why we use lubricants like oil in car engines?
A.To increase the weight of the engine parts.
B.To reduce friction and heat between moving metal parts.
C.To make the engine more magnetic.
D.To help the engine parts stick together better.
Download the worksheet for Forces and Energy - Forces (Gravity, Friction, Magnetism) to practice offline. It includes additional chapter-level practice questions.
Electric Circuits and Conductivity
SubtopicElectric Circuits and Conductivity under Forces and Energy for Grade 5 IB.
Preview questions (no answers)
- 1.
Which of the following materials could be placed in the gap at point 'X' to make the lamp light up, based on its electrical conductivity?
A.A plastic ruler
B.A wooden popsicle stick
C.A glass marble
D.A metal paperclip
- 2.
In the circuit diagram shown below, what will happen to the lamp if the switch is moved to the 'closed' (ON) position?
A.The lamp will not light up because there is no battery.
B.The lamp will light up because the circuit becomes a complete loop.
C.The lamp will explode because the energy is too high.
D.The wires will melt immediately.
- 3.
How many paths for the current are there in the series circuit shown below?
A.Two paths
B.One path
C.Three paths
D.Zero paths
- 4.
What energy transformation occurs when a lamp is lit in a circuit?
A.Electrical to Light
B.Light to Electrical
C.Electrical to Kinetic
D.Sound to Light
- 5.
Which unit is used to measure the flow of electric current?
A.Volts ()
B.Amperes ()
C.Ohms ()
D.Watts ()
- 6.
If you add more lamps in a series circuit, what happens to the overall brightness of each lamp?
A.They get brighter
B.They stay the same
C.They get dimmer
D.They change color
- 7.
What is required for an electric current to flow through a circuit?
A.A broken wire and a battery
B.An open switch and a piece of wood
C.A power source and a complete loop of conductors
D.A plastic path and a lamp
- 8.
A technician is investigating why a flashlight is very dim. He looks at the circuit diagram of the flashlight. If he wants to increase the brightness of the lamp without changing the battery, which modification would be most effective based on the laws of electricity?
A.Add a second lamp in series to share the energy between two bulbs.
B.Replace the current wires with much thinner wires to squeeze the electricity through faster.
C.Decrease the total resistance in the circuit by ensuring all connections are clean and using highly conductive wires.
D.Wrap the battery in an insulating tape to keep the electricity from escaping into the air.
- 9.
In a laboratory, a student is testing the conductivity of different liquids. They set up the circuit shown below and dip the two open wire ends into a beaker of salt water. Why does the lamp light up when the wires are in salt water, but not when they are in pure distilled water?
A.Salt water is a magnetic material that attracts the electricity from the battery.
B.The salt provides dissolved ions that allow the liquid to act as a conductor and complete the circuit.
C.Distilled water is too heavy for the electrons to swim through compared to salt water.
D.The lamp only works when the water is warm, and salt makes water hotter.
- 10.
Sarah is building a safety alarm. She uses a 'Normally Open' switch as shown in the diagram. If she wants the buzzer to sound only when a door is closed (pushing the switch down), what must happen to the circuit for the electrical energy to be transformed into sound?
A.The switch must remain open to allow the electricity to jump the gap as a spark.
B.The circuit must be closed so that there is a continuous loop of conducting material for the current.
C.The buzzer must be moved closer to the battery to reduce the distance electrons have to travel.
D.The switch must be replaced with an insulator like a rubber band to increase the sound volume.
Download the worksheet for Forces and Energy - Electric Circuits and Conductivity to practice offline. It includes additional chapter-level practice questions.