Physics

When 4 grams of a substance loses 4 calories in cooling 1degreeC, its specific heat capacity using water as the unit of measure, is...

1

A change in temperature of 10degreesC is equal to a change of...

10 K.

Mix 3 liters of 20degreeC water with 4 liters of 30degreeC water and you'll have 7 liters of water at...

26degreeC

A container of water has its smallest volume at...

4 degrees C.

One thousand calories of heat are added to 150 grams of water when its temperature is 33degreesC. The resulting temperature of the water is...

40degreesC.

Mix a liter of 70degreesC water with 2 liters of 40degreesC water and you'll have 3 liters of water at...

50degreesC

Temperature is related mostly to the...

Average molecular kinetic energy in a substance.

Which temperature scale labels the freezing point of water at 0 degrees?

Celsius.

Which is denser, ice at 0 degrees C or water at 4 Degrees C?

The water.

Which of the following expands most when the temperature is lowered?

Water at 4 degrees C.

Which has the higher specific heat capacity, water or sand?

Water.

Which releases the most energy, 100 grams of 100degreeC water cooling 50degreeC, or 100 grams of iron at 100degreeC cooling to 50degreeC? (The specific heat of iron is 0.12 cal/g degree C.)

Water.

Which, at the same temperature, will cool more slowly on a hot day?

Watermelon.

Mix some 70degreesC water with some 40degreesC water and you'll get water at...

a temperature depending on the masses (or volumes) of water.

Heat is measured in...

all of the above.

The energy content of a piece of food is normally determined by...

burning food.

A bimetallic strip will bend when heated because...

each metal expands at different rates.

Heat is the...

energy transferred between objects because of a temperature difference.

When water at 4 degrees C is heated, it expands. When water at 4 degrees C is cooled, it...

expands.

Your grandmother places a pitcher of iced tea next to a plate of warm, freshly baked cookies so that the pitcher and the plate are touching. You tell your grandmother that the plates are in thermal contact, which means that...

heat flows from the warm plate to the cold pitcher.

Some molecules are able to absorb large amounts of energy in the form of internal vibrations and rotations. Materials composed of such molecules would have...

high specific heat capacities.

The largest extremes in temperature are usually experienced...

in the middle of a continent.

When an iron ring is heated, the hole becomes...

larger.

If the specific heat capacity of water were higher than it is, lakes would be...

less likely to freeze.

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has a...

low specific heat capacity.

Specific heat capacity is related to the amount of internal energy...

needed to change the temperature of one gram of a substance one degree.

A piece of iron (specific heat = 0.12 cal/g degrees C) and a cup of water both have the same temperature. If they are heated so the internal energy of each doubles...

the iron will have the higher temperature.

Internal energy is the...

total amount of energy contained in an object.

The reason fish live from year to year in ponds that freeze over in the winter is that..

water below the ice is 4 degrees above freezing.

During a very cold winter, water pipes sometimes burst. The reason for this is...

water expands when freezing.

The reason an ocean's temperature doesn't vary much from one season to the next is that...

water has a high specific heat capacity.

Consider a gap cut into a metal ring. If the ring is heated, the gap becomes...

wider.