Font size
WorksheetsThermal Equilibrium Physics 4.1 Form 4
Total questions: 37
Worksheet time: 28mins
Why is water suitable to be used as a cooling agent
Water has one of the highest specific heat capacities among liquids which makes it a very useful substance for moving heat around
Water has one of the lowest specific heat capacities among liquids which makes it a very useful substance for moving heat around
What is the importance of specific heat capacity of a substance
Helps to moderate daily temperatures around large bodies of water
Water is used as a coolant in motor cars
Helps to keep our body temperature constant
The temperature of seawater rises and falls much more slowly than that of the land
What influences the behaviour of gases
Charge (Q)
Temperature (T)
Volume (V)
Pressure (P)
Quantity (n)
When we heat up water in a kettle the rate of increase in water temperature depends on ____ _________ __ _______ ______.
(a)
When the water boils its temperature will know longer __________.
increase
decrease
If the same quantity of oil and water are heated separately at the same time which one will be hotter first
Oil
Water
Relationship and interaction between physical properties of matter such as
Temperature
Mass
Pressure
Volume
Heat
Why the spoon and the coffee I say to be in thermal contact when a cold metal spoon is put into a cup of hot coffee?
(a)
How can the metal spoon cool down the hot coffee?
(a)
What is the final condition of the spoon and the coffee
(a)
Why is beaker A wrapped with tissue paper ?
(a)
Describe the change in temperature of the hot water in the water
The temperature of the hot object will drop until the temperature of both objects become the same
The temperature of the hot object will rise until the temperature of both objects become the same
The temperature of the cold object will drop until the temperature of both objects become the same
The temperature of the cold object will rise until the temperature of both objects become the same
What causes the change in temperature?
Net heat transfer between the two objects become one
Net heat transfer between the two objects become zero
Arrange according flow of heat energy and thermal equilibrium
i. Temperature of P and temperature of Q become the same
ii. Hot object, P is in thermal contact with cold object, Q
iii. Therefore, temperature of P drops and temperature of Q rises
iv. The rate of heat transfer from P to Q is the same as the rate of heat transfer from Q to P
v. The rate of heat transfer from P to Q is higher than the rate of heat transfer from Q to P
vi. Net heat transfer between P and Q becomes zero
vii. There is a net transfer of heat from P to Q
viii. P and Q are in state of thermal eqilibrum
iii, ii, vii, i, viii, iv, v, vi
ii, v, vii, iii, i, iv, vi, viii
Thermal equilibrium causes two objects in thermal contact to reach the _________ temperature.
Same
Different
patient, temperature
hot air, cake batter
muffin, cupcake
What happens when food is kept in refrigerator?
Heat from the food flows to the air in the refrigerator until thermal equilibrium occurs
Food stays fresh for a longer period
Temperature of food drops
Temperature of food rises
How to make drinks cooled?
(a)
(a)
thermometer, thermal equilibrium, patience
thermal equilibrium, patience, thermometer
patience, thermometer, thermal equilibrium
If the thermometer does not have clear scale, do we need another thermometer?
(a)
Two fixed points used for distilled water are
Freezing point of ice, 0°C
Melting point of ice, 0°C
Boiling point of water, 100°C
Heating point, 0°C
The process of calibrating uses the thermometric property of (a) in glass.
State the meaning of thermometric property.
(a)
Length of column of liquid is an example of thermometric property
True
False
What is the function of cooking thermometer?
(a)
Why periodic calibration of the thermometer is very important?
Avoid food poisoning cause of poor control of food and temperature
Avoid food poisoning cause of poor control of time and temperature
The bulb of the temperature should not touch the base or side wall of the beaker while taking measurement. Explain.
Just because
fractures the glass
does not allow for correct temperature measurements
the actual reading of human body temperature will get affected
Why should you wait until there is no change in the level of the liquid column before making a mark on the sterm of the thermometer?
/
.
State the meaning of calibration
(a)
Fixed lower limit
0°C
100°C
Fixed upper limit
0°C
100°C
The length of liquid column between the fixed lower limit and fixed upper limit is devided into _____ equal divisions.
10
100
1000
The thermometer after calibrated can be used to measure temperature between
0°C and 0°C
0°C and 100°C
100°C and 100°C
100°C and 0°C
State what happens to two objects in thermal equilibrium.
(a)
Is our body in thermal equilibrium with the enviroment? Explain.
(a)
(a)
