Unit 2 Pre-Assessment

Which material does not conduct electricity?

• gold
• iron
• brass
• wood

A pan containing hot water is left on the counter and becomes cool mainly due to _________.

• cold air penetrating the hot water.
• hot water reacting with the metal pan.
• heat from the water moving into the cooler air.
• water molecules moving apart.

Savannah is using a metal spoon to stir and notices that thermal energy from the pan made the spoon ___.

• dry
• hot
• wet
• cold

Electricity travels well through ______.

• Wood
• Rubber
• Plastic
• Copper

Mariana notices that the ice in her water is melting after sitting outside. Why is this?

• Heat moves from the ice to the water.
• Cold moves from the ice into the water.
• Cold moves from the water into the room.
• Heat moves from the air into the water.

What type of energy is being transferred to a pot to make water boil?

• light
• potential
• sound
• heat

A brick exposed to sunlight becomes warm. How is energy from the Sun transferred to the brick?

• Convection
• Conduction
• Radiation
• Reflection

Which process is responsible for moving hot air inside a fireplace up the chimney?

• Conduction
• Convection
• Radiation
• Reflection

Plastic doesn't conduct electricity well, so it is used to cover __________.

• wood
• rubber
• liquids
• metal

When warm air rises through currents, this is known as _______.

• Convection
• Conduction
• Radiaton
• Potential