Chapter 15- Harichi Physics

When you touch a cold piece of ice with your finger, energy flows A) from your finger to the ice. B) from the ice to your finger. C) actually, both ways.

A) from your finger to the ice.

The fact that gasoline overflows a full tank on a hot day is evidence that A) gasoline expands more with increasing temperature than its tank. B) the tank contracts while gasoline expands with temperature. C) both of these D) neither of these

A) gasoline expands more with increasing temperature than its tank.

A substance that heats up relatively slowly has a A) high specific heat capacity. B) low specific heat capacity. C) either of these D) neither of these

A) high specific heat capacity.

Temperature is most closely related to molecular A) kinetic energy. B) potential energy. C) electrical energy. D) mechanical energy in general.

A) kinetic energy.

A substance that cools down faster than others has a A) low specific heat capacity. B) high specific heat capacity. C) either of these D) neither of these

A) low specific heat capacity.

Before ice can form on a lake, all the water in the lake must be cooled to A) zero°C. B) 4°C. C) -32°C. D) none of the above

B) 4°C.

As a piece of metal with a hole in it cools, the diameter of the hole A) increases. B) decreases. C) remains the same.

B) decreases.

When most substances are heated, molecules inside move faster and take up more space, resulting in thermal A) bending. B) expansion. C) contraction. D) heat.

B) expansion.

Compared to a giant iceberg, a hot cup of coffee has A) more internal energy and higher temperature. B) higher temperature, but less internal energy. C) a greater specific heat and more internal energy. D) none of the above

B) higher temperature, but less internal energy.

Which of the following normally warms up fastest when heat is applied? A) water B) iron C) glass D) wood E) all of the above

B) iron

Aluminum has a higher specific heat capacity than iron. This means that for equal masses of aluminum and iron, the metal that heats more quickly when the same amount of heat is applied is A) aluminum. B) iron. C) need more information

B) iron.

When an iron ring is heated, the hole becomes A) smaller. B) larger. C) neither smaller nor larger. D) either smaller or larger, depending on the ring thickness.

B) larger.

Room temperature on the Kelvin scale is about A) 100 K. B) 200 K. C) 300 K. D) 400 K.

C) 300 K.

The amount of heat needed to raise the temperature of 1 gram of water by 1°C is A) 4.19 calories. B) 4.19 Calories. C) 4.19 joules. D) none of the above

C) 4.19 joules.

Heat energy is measured in units of A) joules. B) calories. C) both of these D) neither of these

C) both of these

Pour two liters of water at 40°C into one liter of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.

C) more than 30°C.

A substance with a high thermal inertia has a high A) temperature, in many cases. B) heat conductivity. C) specific heat capacity. D) energy content.

C) specific heat capacity.