a. What have you observed when you touch each of the glass before 20 minutes?
_
b. Which glass has the greatest kinetic energy? _____greatest temperature?_______
c. Which glass has the most amount of thermal energy?_ Why?
___________________________________________________________________
d. Was the feeling the same when you touched the three glasses after 20 minutes?
_____________ Why? ________________________________________________
e. What causes the change in temperature of the water?
_________________________________________________________________
f. What do you think has transferred from the surrounding air to glass A and from
glass C to the surrounding air?
_________________________________________________________________
g. What do you call the transfer or flow of thermal energy?
___________________________________________________________________
h. Complete the statement.
Heat energy transfers from ____ to region.
i. Why should thermal energy be transferred?
_
b. Which glass has the greatest kinetic energy? _____greatest temperature?_______
c. Which glass has the most amount of thermal energy?_ Why?
___________________________________________________________________
d. Was the feeling the same when you touched the three glasses after 20 minutes?
_____________ Why? ________________________________________________
e. What causes the change in temperature of the water?
_________________________________________________________________
f. What do you think has transferred from the surrounding air to glass A and from
glass C to the surrounding air?
_________________________________________________________________
g. What do you call the transfer or flow of thermal energy?
___________________________________________________________________
h. Complete the statement.
Heat energy transfers from ____ to region.
i. Why should thermal energy be transferred?
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Answer:
A.
Your hand will give temperature.
Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1ˢᵗ law of thermodynamics).
B.
The maximal working temperature is 268 °C (514 °F). While it transitions to a liquid starting at 288 °C (550 °F) (just before it turns red-hot), it is not workable until it reaches over 538 °C (1,000 °F).
When an object has the LEAST potential energy, it has the MOST kinetic energy.
C.
For two glasses containing the same amount of milk, the glass of milk with the higher temperature has more thermal energy than the glass of milk with the lower temperature.
D.
after 20 minutes it will no longer too hot and cold
E.
Heat transfer, whether from the air, sunlight, another water source or thermal pollution can change the temperature of water. ... Heat flow and the fluctuation of temperature determine what species will live and thrive in a body of water.
F.
Temperature and Thermometers
Introduction to Thermal Physics
Temperature and Thermometers
Thermometers as Speedometers
G.
The term conduction refers to the transfer of energy. Conduction occurs when energy is passed between objects. The transfer of thermal energy is called heat.
H.
Heat can be transferred in three ways: by conduction, by convection, and by radiation. Conduction is the transfer of energy from one molecule to another by direct contact. ... Conduction takes place in solids, liquids, and gases, but works best in materials that have simple molecules that are located close to each other.
I.
Generally, when thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases. ... If two objects are placed in contact with each other, thermal energy flows from the warmer object (with faster-moving particles) to the cooler object (with slower-moving particles).
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