Grade 6 Quiz, Forces.

1. The image below shows a tug of war before and after the teams have started pulling, which direction do you think the rope will move?

Up

Left

Down

Right

Based on the image, it can be inferred that the team on the left has more people and is exerting a greater force compared to the team on the right. Therefore, the rope is likely to move towards the left direction, as the team with more force will overpower the other team and pull the rope in their direction.

Explanation

Based on the image, it can be inferred that the team on the left has more people and is exerting a greater force compared to the team on the right. Therefore, the rope is likely to move towards the left direction, as the team with more force will overpower the other team and pull the rope in their direction.

2. Match the following to its correct unit.

Mass

Weight

Volume

Length

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3. Which two forced act on a floating object?

Gravity

Down thrust

Up thrust

All of the above

When a object is floating, it is being supported by the upward force called up thrust, which is exerted by the fluid (usually water) in which it is floating. This up thrust counteracts the downward force of gravity, allowing the object to remain buoyant and float. Therefore, both gravity and up thrust are the two forces that act on a floating object.

Explanation

When a object is floating, it is being supported by the upward force called up thrust, which is exerted by the fluid (usually water) in which it is floating. This up thrust counteracts the downward force of gravity, allowing the object to remain buoyant and float. Therefore, both gravity and up thrust are the two forces that act on a floating object.

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4. A force that tries to slow things down, when two things rub together is called.

Gravity

Upthrust

Friction

Motion

Friction is the correct answer because it is the force that opposes the motion of two surfaces in contact with each other, causing them to slow down.

Explanation

Friction is the correct answer because it is the force that opposes the motion of two surfaces in contact with each other, causing them to slow down.

5. Three simple machines are....?

Wind turbine

Gears

Engines

Wheels

Leavers

Cranes

Pulleys

Screwdriver

The correct answer is gears, levers, and pulleys. These are all examples of simple machines that can be used to multiply or change the direction of force. Gears are used to transmit power and motion between rotating shafts. Levers are used to lift or move heavy objects by applying force at one end and using a pivot point. Pulleys are used to lift heavy objects by redirecting force through a system of ropes or cables.

Explanation

The correct answer is gears, levers, and pulleys. These are all examples of simple machines that can be used to multiply or change the direction of force. Gears are used to transmit power and motion between rotating shafts. Levers are used to lift or move heavy objects by applying force at one end and using a pivot point. Pulleys are used to lift heavy objects by redirecting force through a system of ropes or cables.

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6. Fill in the blanks the describe how the magnets will react. Positive and positive ends will _____. positive and negative ends will _____. negative and negative ends will _____.

Positive and positive ends of magnets will repel each other, as like poles repel. Positive and negative ends of magnets will attract each other, as opposite poles attract. Negative and negative ends of magnets will repel each other, as like poles repel.

Explanation

Positive and positive ends of magnets will repel each other, as like poles repel. Positive and negative ends of magnets will attract each other, as opposite poles attract. Negative and negative ends of magnets will repel each other, as like poles repel.

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7. What determines if the forces acting on an object are balanced?

Opposite direction

Equal magnitude

Same direction

Different magnitude

Forces acting on an object are balanced when they have opposite directions and equal magnitudes. This means that the forces are equal in strength but act in opposite directions, resulting in a net force of zero. When the forces are balanced, the object remains at rest or continues to move at a constant velocity.

Explanation

Forces acting on an object are balanced when they have opposite directions and equal magnitudes. This means that the forces are equal in strength but act in opposite directions, resulting in a net force of zero. When the forces are balanced, the object remains at rest or continues to move at a constant velocity.

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8. Fill in the blanks Gravity _____ to the center of the Earth. A piece of Equipment that is used to measure forces is called _____. The unit of force is _____. Air _____ on a falling object is called upthrust.

Gravity is the force that pulls objects towards the center of the Earth. A Newton meter is a piece of equipment used to measure forces. The unit of force is Newton. The air resistance on a falling object is called upthrust.

Explanation

Gravity is the force that pulls objects towards the center of the Earth. A Newton meter is a piece of equipment used to measure forces. The unit of force is Newton. The air resistance on a falling object is called upthrust.

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9. Fill in the blanks Friction is a force that _____ or _____ motion when objects rub together. The _____ the surfaces are the faster the objects will stop.

Friction is a force that slows or stops motion when objects rub together. The rougher the surfaces are, the faster the objects will stop.

Explanation

Friction is a force that slows or stops motion when objects rub together. The rougher the surfaces are, the faster the objects will stop.

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