Physical Science Review

G5 Physical Science Review

By Ms. Latorre

Energy of motion or MOVEMENT

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Example: A ball that is rolling down the hill​

Kinetic Energy

Energy that is STORED in ​an object

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Example: A ball sitting at the top of the hill​

Potential Energy

Energy and Motion

Multiple Choice

Q. 

During a thunderstorm the power went out. Randy's dad light a candle to burn for light energy. What other energy does the candle give off?

• Chemical

• Electrical

• Thermal

• Mechanical

Multiple Choice

Q. 

What forms of energy are given off when the fireworks erupt using chemical energy?

• Sound and solar

• heat and electrical

• light and sound

• mechanical and solar

Energy caUSES cHANGE

eNERGY IS THE ABILITY TO DO WORK

Work is a force that moves an object

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Sources of energy that cause movement:

• wind and water​

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Multiple Choice

Q. 

Latisha notices that when she rubs her hands together, they feel warm. Which of the following is the best explanation for why this happens?

• Energy is reflected into her hands

• Heat energy is produced by friction

• Light energy of the sun heats her hands

• energy is absorbed from the air by her hands

Force and Motion

A force is a push or a pull

Forces are always acting on an object.

• Gravity, the force of the ground, friction, etc.

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When an object is moving, the forces are UNBALANCED​.

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Multiple Choice

Mr. Anderson is trying to move two bookshelves that are the same size. One is full of books, and the other is empty. Why does he need to apply more force to the bookshelf that is full of books?

• The bookshelf has more matter/is heavier

• the bookshelf is blue

• the bookshelf is shoreter than the other

• the bookshelf is moving faster

Multiple Choice

Mr. Cadore has two bar magnets. What will happen when he puts the south end of one magnet near the south end of anoither magnet?

• The magnets will attract (pull together)

• The magnets will repel (push away)

• The magnets will fly

• the magnets will give off radiation.

Slow the flow of thermal energy and electricity between objects

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ie., thick fabrics, rubber, glass, plastic​

Insulators

Allow thermal energy and electricity to flow easily between objects

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ie., METAL​

Conductors

Conductors and Insulators

Multiple Choice

Which of the following is a poor conductor?

• Aluminum foil

• a metal fork

• a rubber band

• a copper wire

The path the electricity can travel through is not complete, so the electricity cannot flow back to the power source.​

Open circuit

The path that the electricity can travelled in has no breaks. Electricity will flow from the power source to the lightbulb then back to the power source

Closed circuit

Electric Circuits (Flow of electricity)

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Multiple Choice

Which of the following does not show electricity being transformed (changed)?

• Plugging in your speaker

• turning on the oven

• the sun

• turning on the light