IQWST Physics Quiz Lessons 1 & 2. and VR

What allows some metals to act like a permanent magnet or be magnetic?

• How dense the metal is.

• What part of the world the metal is found in.

• How the atoms behave in the metal when near a magnetic field

• How heavy the metal is.

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How did the red wire with electric current traveling through it make the compass needle move?

• The metal in the wire became a magnet.

• The electric current is actually a magnetic field.

• It is currently unknown.

• The red part of the wire is attracted to the red part of the magnet.

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What is the relation between the force the lower magnet applies to the upper magnet and the force the upper magnet applies to the lower one?

• They are equal.

• They act in opposite directions.

• They get stronger as the magnets get closer to one another.

• All of the above.

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Identify the forces acting [A, B, & C] within the floating magnets system.

• A and C = Gravitational Force, B = Contact Force

• A = Magnetic Force, B = Contact Force, C = Gravitational Force

• A = Magnetic Force, B and C are contact forces

• A, B, and C are all contact forces.

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We can now refer to the vehicle-pull-vehicle diagram above as a model since it can be used to explain and predict the system’s behavior. Which model shows forces acting at a distance?

• 
• 
• 
• A, B, and C are all contact forces.

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Gravity is called a force that acts at a distance. What other forces act at a distance? Check all that apply.

• Magnetic forces and electrical forces also act at a distance and come in pairs.

• We investigated magnets and saw that they do not have to be in contact with each to apply a force to the other. We saw that the force was stronger the closer they were to each other.

• Friction is a force that acts at a distance but is stronger the closer the objects.

• We saw the electrical force from a balloon attracted pieces of paper from a distance to the balloon.

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Which statements are true regarding our own exploration with magnetic field lines and iron filings ? Mark all that apply.

• A magnetic field forms only when two magnets are touching.

• A magnetic field forms only when the north pole of a magnet is close to the south pole of another magnet.

• Forces from a magnetic field can act on an object without touching the object.

• Magnet field lines travel from N Pole (+) to South Pole(-)

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What are the components of this system?

• Vehicle 1, vehicle 2, and the rope.

• Vehicle 1 and vehicle 2

• Vehicle 1, rope, vehicle 2, and the ground.

• The rope and the ground only.

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Each of the images above is an example of contact forces. What statements below are true regarding contact forces?

• If one force is a push, the other will also be a push; if one is a pull, the other will also be a pull.

• Contact pairs always act in opposite directions.

• Contact pairs always act in the same direction.

• When two objects are touching, one force is always stronger than the other force.

Why is the box sitting on the table not moving? Hint: Think Newton's 3rd Law

• No forces are acting on the box.

• The table pushes up with the same force that gravity pulls down.

• Gravity is keeping the box down on the table.

• Gravity is pulling down, but the table is in the way.

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