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Modified T/F Multiple Choice Multiple Choice Completion Modified T/F

If you put your hand above a burner on a stove, your hand becomes hotter than if you put your hand beside the burner. The heat is transferred to your hand above the burner by radiation. A 100

True A 100

A heat engine is an extremely efficient machine. A 200

False; not an A 200

Fans moving hot air is an example of forced convection. A 300

True A 300

Radiation transfers energy by moving matter. A 400

False; electromagnetic waves A 400

A refrigerator changes thermal energy. A 500

False; transfers A 500

When a substance is cooled it usually expands. B 100

False; contracts B 100

When two containers at the same temperature are brought together, no heat is transferred. B 200

True B 200

DAILY DOUBLE B 300 DAILY DOUBLE Place A Wager

Air is a good conductor of heat. B 300

False; poor B 300

Compared to water, most metals have low specific heats. B 400

True B 400

Thermostats transform potential energy into kinetic energy. B 500

False; thermal, mechanical B 500

DAILY DOUBLE C 100 DAILY DOUBLE Place A Wager

In years past, people would put a hot water bottle in bed with them to help warm their feet. The transfer of the warmth from the water bottle to their feet is called _____. a. heat b. temperature c. thermal energy d. kinetic energy C 100

In years past, people would put a hot water bottle in bed with them to help warm their feet. The transfer of the warmth from the water bottle to their feet is called _____. a. heat

The ocean is cold even in summer because water has _____ a. high specific heat b. low specific heat c. conduction d. insulation C 200

The ocean is cold even in summer because water has _____ a. high specific heat

A bimetallic coil is used in a thermostat because _____. a. the two metals heat and cool at different rates b. it is cheap c. a single metal would be too small d. the two metals have different roles in the operation of the machine C 300

A bimetallic coil is used in a thermostat because _____. a. the two metals heat and cool at different rates

The lowest possible temperature is ____. a. 0° b. –273°F c. 0K d. –273K C 400

The lowest possible temperature is ____. c. 0°K

In what part of an internal combustion engine is the gasoline mixed with air? a. cylinder b. exhaust valve c. piston d. spark plug C 500

In what part of an internal combustion engine is the gasoline mixed with air? a. cylinder

Every material has its own specific heat. It is easy to change the temperature of a material with _____. a. high specific heat b. low specific heat c. conduction d. insulation D 100

Every material has its own specific heat. It is easy to change the temperature of a material with _____. b. low specific heat

To check if a stovetop is hot, you place your hand near the top of the stove and feel that it is warm without touching it. You can feel the heat from the stovetop because of _____. a. conduction b. radiation c. convection d. kinetic energy D 200

To check if a stovetop is hot, you place your hand near the top of the stove and feel that it is warm without touching it. You can feel the heat from the stovetop because of _____. b. radiation

DAILY DOUBLE D 300 DAILY DOUBLE Place A Wager

When a substance is heated, the particles gain energy and spread out creating more volume. What happens to the mass of the substance when it is heated? a. mass increases b. mass decreases c. mass remains the same d. mass is lost D 300

When a substance is heated, the particles gain energy and spread out creating more volume. What happens to the mass of the substance when it is heated? c. mass remains the same

Temperature is a measure of ____ of the particles in an object. a. the difference between the potential and kinetic energy b. the sum of the potential and kinetic energy c. the average potential energy d. the average kinetic energy D 400

Temperature is a measure of ____ of the particles in an object. a. the difference between the potential and kinetic energy b. the sum of the potential and kinetic energy c. the average potential energy d. the average kinetic energy

When a pot of water is put on a stove, the water at the top gets hot primarily by ____. a. radiation b. conduction c. convection d. condensation D 500

When a pot of water is put on a stove, the water at the top gets hot primarily by ____. c. convection

Objects that are at the same temperature can have different _______________. E 100

thermal energies

A material with low specific heat is a _______________. E 200

thermal conductor

DAILY DOUBLE E 300 DAILY DOUBLE Place A Wager

The amount of heat required to raise the temperature of 1 kg of a substance by 1°C is its ________________. E 300

specific heat E 300

A toaster has a temperature regulator called a ______________. E 400

thermostat E 400

In an automobile engine, the fuel burns in a(n) ___________________________ inside the engine. E 500

(combustion chamber) cylinder E 500

A good ____________ transfers heat easily. F 100

conductor F 100

A material with high specific heat is a _______________. F 200

thermal insulator F 200

Heat always moves from __________ objects to __________ objects. F 300

warmer; cooler F 300

F 400 Refrigerators work by transferring _______________ out of the refrigerator and into the coolant.

F 400 thermal energy

F 500 In the winter, rooms are often hotter near the ceiling than on the floor because hot air is ______ ____________ than cold air.

F 500 less dense

The Final Jeopardy Category is: Thermal Energy & Conductors Please record your wager. Click on screen to begin

Explain why a metal handrail feels colder than a wooden handrail, even though they are at the same temperature. Click on screen to continue

Metal is a better conductor of heat than wood. The metal conducts heat away from your hand more rapidly so your hand feels cold at the points of contact. Click on screen to continue

Thank You for Playing Jeopardy! Game Designed By C. Harr-MAIT Edited By Laura