Physics Quiz for Grade 4

What is force? Give an example of a force in everyday life.

• Pulling a chair to sit on it

• A common example of force in everyday life is pushing a door to open it.

• Watching TV

• Eating a sandwich

Explain the difference between speed and velocity.

• Speed is the measure of how fast an object is moving, while velocity is the measure of how fast and in what direction an object is moving.

• Speed is the measure of acceleration, while velocity is the measure of deceleration.

• Speed is the measure of distance covered in a specific time, while velocity is the measure of distance covered in any direction.

• Speed is the measure of how slow an object is moving, while velocity is the measure of how fast an object is moving.

What is energy? Give an example of an object with potential energy.

• A stretched rubber band

• A book on a shelf

• A piece of paper

• A cup of water

Describe the concept of work in physics. Provide an example of work being done.

• When a person sits on a chair, work is being done against the force of gravity.

• When a car is parked, work is being done against the force of friction.

• When a person lifts a box from the ground to a shelf, work is being done against the force of gravity.

• When a book is placed on a table, work is being done against the force of magnetism.

How does light travel? Explain the concept of reflection and refraction.

• Light travels by bending around objects and then continuing on its path.

• Light travels in straight lines and can be reflected or refracted when it encounters a surface or medium.

• Light travels by zigzagging through the air and then reaching its destination.

• Light travels by bouncing off clouds and then reaching the ground.

What is sound? How does it travel through different mediums?

• Sound is a form of energy that does not travel through different mediums.

• Sound is a type of solid material that travels through different mediums.

• Sound is a type of light that travels through different mediums.

• Sound is a form of energy that travels through vibrations in different mediums.

What is electricity and how is it generated? Explain the concept of a magnetic field.

• Electricity is the flow of heat. It is generated by the sun's rays hitting the ground.

• Electricity is the flow of electric charge. It is generated through various methods such as burning fossil fuels, nuclear power, hydroelectric power, and renewable sources like solar and wind.

• Electricity is the flow of water. It is generated by burning wood and coal.

• Electricity is the flow of air. It is generated by the movement of clouds in the sky.

How is heat transferred? Describe the difference between conduction, convection, and radiation.

• Heat is transferred through photosynthesis, evaporation, and precipitation.

• Heat is transferred through multiplication, division, and addition.

• Heat is transferred through conduction, convection, and radiation.

• Heat is transferred through boiling, freezing, and melting.