Heat

The unit of heat is
1. joule
2. kelvin
3. fahrenheit
4. calorie
The SI unit of temperature is
1. joule
2. kelvin
3. fahrenheit
4. calorie
What is a kind of energy that flows from a hot body to a cold body?
1. electricity
2. light
3. heat
4. all the above
When an object is heated, the molecules that make up the object
1. begin to move faster
2. lose energy
3. become heavier
4. become lighter
One litre of water at 30 C is mixed with one litre ofwater at 50 C. The temperature of the mixture will be
1. 80 C
2. More than 50 C but less than 80 C
3. 20 C
4. around 40 C
An iron ball at 500C is dropped in mug containing water at 500C. The heat will
1. flow from iron ball to water
2. not flow from iron ball to water or from water to iron ball
3. flow from water to iron ball
4. increase the temperature of both
We reduce the heat by adding what while preparing fruit juice?
1. sugar
2. lime
3. ice cubes
4. salt
One day in 1922, the air temperature was measured at 590C in the shade in Libya
1. America
2. Antarctica
3. Africa
4. Europe
Our normal body temperature is
1. 34 C
2. 35 C
3. 36 C
4. 37 C
The temperature determines the direction of flow of
1. kinetic energy
2. heat energy
3. light energy
4. potential energy