2nd 9W Review

What is a force?

• A type of energy

• A push or a pull that can change the position or motion of an object

• A kind of scientific tool

• A measurement unit

What does magnetism refer to?

• A force that pulls objects away from each other

• A force that only affects metal objects

• A force of attraction that causes magnetic material to move

• A force that can only be felt on Earth

Which force is responsible for keeping objects grounded on Earth?

• Magnetism

• Friction

• Gravity

• Tension

What is the role of friction?

• It speeds up movement

• It acts in the direction of movement

• It acts in the opposite direction to movement

• It reduces gravitational pull

What tool is used to measure force?

• Thermometer

• Barometer

• Spring scale

• Stopwatch

Which magnet will attract the metal bar first?

• Magnet 1

• Magnet 2

• Magnet 3

• None of the magnets

What is an electrical circuit?

• The path through which electricity can travel

• A device that stores electricity

• A type of battery

• A light source

Which of the following items can be added to an electrical circuit to allow energy to flow?

• Plastic lego

• Styrofoam cup

• Metal wire

• Piece of cork

Label the parts of a typical electrical circuit shown in the diagram.

• Battery, wire, light bulb, switch

• Wire, battery, switch, light bulb

• Light bulb, switch, battery, wire

• Switch, light bulb, wire, battery

Which type of circuit is Circuit A in the image?

• Closed

• Open

• Partially closed

• None of the above