Temperature and Energy Transfer
A. ______- measure of the average kinetic energy of an object’s atoms.
B. Temperature is measure with a ______.
1. ______- freezing point of water is 32º and boiling point is 212º.
2. ______- freezing point of water is 0º and boiling point is 100º.
C. ______- transfer of energy from one object to another due to a difference in temperature.
1. Heat ______from warmer objects to cooler ones.
2. Flow of heat ______when the temperature of two objects is the same.
D. ______is unusual because it takes a large amount o heat to raise its temperature; water’s temperature does not change as much as surrounding air or land.
E. Heat can be transferred in ______ways.
1. ______- transfer of energy by collisions between atoms; usually occurs in solids.
2. ______transfers heat when particles move between objects or areas that differ in temperature; most common in gases and liquids.
3. Energy transferred by waves is ______.
Directions: Complete the following using the correct terms.
1. The words ______and ______are commonly used to indicate temperature, but they are not scientific terms because they mean different things to different people.
2. Temperature really is a measure of the ______of the particles in any material.
3. ______is an energy transfer due to a difference in temperature.
Directions: Complete the chart.
Two Scales for Measuring TemperatureName of Scale / Abbreviation / Temperature at which water freezes (degrees) / Temperature at which water boils (degrees)
Fahrenheit / 4. / 5. / 6.
Celsius / 7. / 8. / 9.
Directions: Read the following description. Then answer the questions.
Assume that you have just taken a pan of cookies out of the oven and set them on the counter to cool. In the space below, draw a picture of the cookies in the pan sitting on the counter. Add wavy lines to show the heat from the cooling cookies.
10. What term refers to the average kinetic energy of the particles of one of the cookies? ______
11. Imagine you put your hand next to one cookie without touching it. Your hand feels warm. By what method(s) has the thermal energy of the cookies transferred to your hand? ______
12. Imagine you move the pan and touch the spot where it had been sitting. The counter feels warm. How did the thermal energy of the cookies transfer to the counter? ______
13. The lines you drew above the cookies show that the air above the cookies is rising in a current.
a. By what method is the thermal energy causing the air to move? ______
b. What kind of current is this? ______