7-MAP STUDY GUIDE

What happens to the particles of a substance when it is heated?

• A. They stop moving

• B. They move slower

• C. They move faster and spread out

• D. They shrink in size

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NGSS.MS-PS1-4

Which of the following is an example of potential energy?

• A. A car moving down a hill

• B. A stretched rubber band

• C. A glowing light bulb

• D. A flying bird

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What is the smallest part of an element that still has its properties?

• Molecule

• Atom

• Cell

• Ion

Which type of energy transformation occurs in a flashlight?

• A. Electrical → Sound

• B. Chemical → Light

• C. Light → Heat

• D. Mechanical → Chemical

Which of the following is a physical change?

• Burning wood

• Cooking an egg

• Melting ice

• Rusting metal

What force pulls objects toward Earth?

• Friction

• Gravity

• Magnetism

• Inertia

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What happens when two forces acting on an object are unbalanced?

• The object stays still

• The object changes motion

• The object becomes lighter

• The forces cancel out

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Which material best conducts electricity?

• Wood

• Plastic

• Copper

• Rubber

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Which of the following best describes mass?

• A. The amount of space an object takes

• B. The amount of matter in an object

What is the law of conservation of mass?

• Mass increases during reactions

• Mass can disappear

• Mass cannot be created or destroyed

• Mass turns into energy during mixing

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