7th Grade Science Final Exam - Physical Science

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

Tags

NGSS.MS-PS1-4

Matter is anything that occupies space and has mass. Which of the following are examples of matter?

• Air and water

• Light and sound

• Heat and energy

• Shadow and reflection

Tags

NGSS.MS-PS1-1

Which particles are found in the nucleus of an atom?

• Electrons only

• Protons and neutrons

• Neutrons and electrons

• Protons and electrons

Mass and weight are different because:

• Mass is the amount of matter in an object, while weight is the force of gravity on that object.

• Mass and weight are always the same.

• Weight is measured in kilograms, and mass is measured in newtons.

• Mass depends on gravity, but weight does not.

Tags

NGSS.MS-PS2-4

A graph shows the speed of a moving object over time. At what time does the object stop moving?

• When the speed is at its maximum

• When the speed is zero

• When the speed is increasing

• When the speed is decreasing

Tags

NGSS.MS-PS3-1

What form of energy is stored in food?

• Thermal

• Nuclear

• Chemical

• Mechanical

Tags

NGSS.MS-LS1-7

Label the parts of an atom.

• Proton, neutron, and electron are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

• Nucleus, molecule, and ion are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

• Proton, electron, and photon are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

• Neutron, positron, and electron are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

Which of the following is a real-life example of Newton's Third Law?

• A person jumping off a boat and the boat moving backward

• A car accelerating on a straight road

• A ball rolling down a hill

• A plant growing towards sunlight

Tags

NGSS.MS-PS2-1

Which of these best conducts electricity?

• Plastic

• Wood

• Copper

• Glass

What happens to molecules in a substance when it is heated?

• They move slower

• They move faster

• They stop moving

• They disappear

Tags

NGSS.MS-PS1-4