Term 2 Quiz - Yr 7

What happens to an object when unbalanced forces act on it?

• It remains at rest.
• It becomes weightless.
• It changes its motion.
• It gains mass.

Which of the following is an example of unbalanced forces in action?

• A person standing still.
• A book resting on a table.
• A ball rolling down a hill.
• A car moving at a constant speed.

What occurs when a soccer player kicks a ball and the force from the kick is greater than the opposing forces?

• The ball loses its shape.
• The ball rolls back to the player.
• The ball moves quickly in the direction it was kicked.
• The ball stays still.

What is the effect of friction when you apply brakes in a car?

• It slows the car down by opposing motion.
• It makes the car lighter.
• It has no effect on the car.
• It helps the car speed up.

Which factor increases the amount of friction when sliding an object across a surface?

• Smoother surface texture.
• Lighter object weight.
• Rougher surface texture.
• Higher speed of movement.

How can a balloon become positively charged?

• By rubbing it against a wool sweater.
• By exposing it to sunlight for a long time.
• By dipping it in water.
• By blowing air into it quickly.

Which of the following is a common effect of electrostatic forces during a thunderstorm?

• Dust particles clumping together.
• Trees growing taller.
• Rain falling faster.
• Wind blowing harder.

In which situation is gravity acting as an unbalanced force?

• A person standing still on the ground.
• A ball thrown upwards.
• A book lying flat on a table.
• A car parked on a hill.

What is the main difference between mass and weight?

• Mass is a force, weight is matter.
• Mass is measured in newtons, weight in kilograms.
• Mass is always greater than weight.
• Mass does not change, weight can change.

Which of the following is an everyday use of magnets?

• Holding notes on a refrigerator.
• Heating food in a microwave.
• Cooling a drink in a fridge.
• Lighting a room with a bulb.