SCI 8 - COOL IT - HEAT TRANSFER REVIEW

Multiple Choice

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

Multiple Choice

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Multiple Choice

The amount of energy required to raise the temperature 1ºC for every gram is called____?

• Thermal Energy

• Specific Heat

• Temperature

• Kinetic Energy

Multiple Choice

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

Multiple Choice

When a  piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?

• 50°
• 0°
• 100°
• 150°

Multiple Choice

Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• There is more water than sand at the beach.

• There is more sand than water at the beach.

Multiple Choice

If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?

• 100 mL
• 1000 mL
• They both heat up at the same speed
• They cool down.

Multiple Choice

Which will heat up slower?

• water

• lead

• granite

• iron

Multiple Choice

Which will heat up faster?

• copper

• granite

• iron

• basalt

Multiple Choice

Which of the following best explains why the sand at the beach is hotter than the water?

• Sand has a higher specific heat than water.

• Sand has a lower specific heat than water.

• There is more water than sand at the beach.

• There is more sand than water at the beach.

Multiple Choice

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Multiple Choice

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Multiple Choice

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Poll

Which substance has the higher heat capacity?

• Water

• Oil

Multiple Choice

Which of the following statements is supported by the first law of thermodynamics?

• The energy inside any system is equal to the energy outside.

• The total amount of energy in the universe is steadily decreasing.

• Energy can never enter a closed system, nor can it leave a closed system.

• The total energy in a closed system is a conserved quantity.

Multiple Choice

Three beakers containing the same volume of water at three different temperatures are placed in a room with air at standard air temperature.

Which of the following will be the most likely result?

• The amount of total energy in the water molecules for all three beakers will increase.

• The temperature in all three beakers will eventually be 25ºC.

• The beaker at 0ºC will increase to 90ºC.

• The surrounding room temperature will eventually be 100ºC.

Multiple Choice

A bowl of hot soup and a glass of ice water are left in a room. Eventually the soup and the water become the same temperature as their surroundings. Which of the following explains the flow of heat that led to this final outcome?

• The heat of the soup and the cold of the water were exchanged, cancelling each other out.

• Heat energy went from the soup to the room and from the room into the ice water.

• Heat energy went from the ice water to the soup and from the soup to the room.

• The low temperature of the water was transferred to the room and from the room to the soup.

Match

Match the following

• Thermodynamics

• Thermodynamic equilibrium

• Temperature

• Thermal energy

The study of heat and its relations with other types of energy

No net flow of thermal energy between objects or an object and a system

Measure of the average amount of kinetic energy of the molecules of a substance

Sum of all potential and kinetic energy of particles in a substance

• The study of heat and its relations with other types of energy

• No net flow of thermal energy between objects or an object and a system

• Measure of the average amount of kinetic energy of the molecules of a substance

• Sum of all potential and kinetic energy of particles in a substance

Multiple Select

Another word for equilibrium could be ___________ or ____________.

• equal

• balanced

• uneven

• move

• transfer

Multiple Choice

In a house, what is the purpose of insulation in terms of thermal energy transfer?

• To promote rapid heat loss.

• To enhance radiation.

• To minimize heat transfer.

• To encourage conduction.

Multiple Choice

If you added ice (0^oC) to a glass of water (15^oC) how would the heat move between the ice & water?

• from the ice to the water

• from the water to the ice