PS Midterm Review 2

Heat is defined as the:

• average kinetic energy of the molecules of an object.

• amount of thermal energy an object contains.

• average temperature of a substance.

• flow of thermal energy from one object to another object.

Tags

NGSS.MS-PS3-3

If you hold a paper cup containing hot chocolate in your hand, thermal energy:

• does not flow.

• flows from the air to the hot chocolate.

• flows from the hot chocolate to your hand.

• flows from your hand to the hot chocolate.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which of the following is NOT a good insulator?

• A pocket of air

• Foam packing material

• A down jacket

• Copper wire

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NGSS.MS-PS3-3

The condition which occurs when two bodies reach the same temperature is:

• heat transfer

• thermal radiation

• thermal equilibrium

• heat convection

The phase of matter that makes the best conductor is:

• solid

• liquid

• gas

• plasma

The property that gives objects the ability to bounce is:

• strength

• elasticity

• hardness

• ductility

The density of a solid material depends on two things; how closely atoms or molecules are packed AND:

• elasticity of the chemical bonds.

• mass of individual atoms or molecules.

• ductility of component particles.

• tensile strength of each molecule.

The physics property that makes ketchup difficult to pour is its:

• malleability.

• ductility.

• viscosity.

• tensile strength.

The property of gold which would make it most useful in the creation of jewelry is:

• hardness.

• elasticity.

• malleability.

• brittleness.

The density of a 14-gram cube of wood measuring 3.0 centimeters on an edge is:

• 0.51 g/cm³

• 0.64 g/cm³

• 1.9 g/cm³

• 4.7 g/cm³