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Q 1/30
Score 0
transfer of energy by electro-magnetic waves is called
30
convection
radiation
conduction
Q 2/30
Score 0
When heat is transferred by the movement of currents within a fluid it is called
30
convection
conduction
radiation
30 questions
Q.
transfer of energy by electro-magnetic waves is called
1
30 sec
Q.
When heat is transferred by the movement of currents within a fluid it is called
2
30 sec
Q.
When heat is transferred from one particle of matter to another by direct contact it is called
3
30 sec
Q.
How is the teapot being heated?
4
30 sec
Q.
How is the cat being heated?
5
30 sec
Q.
How is the man being heated?
6
30 sec
Q.
Energy will always flow or move from an area of high temperature to an area of low temperature
7
30 sec
Q.
A radiator is emitting hot air from the top and pulling in cold air at the bottom. A women accidentally touches the radiator and burns herself. Which of the following shows conduction?
8
30 sec
Q.
Which will heat up faster?
9
30 sec
Q.
Which will heat up slower?
10
30 sec
Q.
If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?
11
30 sec
Q.
How much energy is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C? [specific heat (c) = 0.129 J/(g•°C)]
12
30 sec
Q.
The temperature of a 6.0 g sample of glass changed from 20.0°C to 45.0°C when it absorbed 550 J of heat. What is the specific heat of this glass?
13
30 sec
Q.
Which of the following best explains why the sand at the beach is hotter than the water?
14
30 sec
Q.
When a piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?
15
30 sec
Q.
How does heat flow?
16
30 sec
Q.
The amount of energy required to raise the temperature 1ºC for every kilogram is called____?
17
30 sec
Q.
Object A has a specific heat of 4.45 J/g⁰C and object B has a specific heat of 1.82 J/g⁰C. Which object will heat up faster?
18
30 sec
Q.
Graphite has a specific heat of 0.709 J/g⁰C. If a 20 gram piece of graphite is cooled from 38⁰C to 18⁰C, how much energy was lost by the graphite?
19
30 sec
Q.
The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?
20
30 sec
Q.
The SI units J/g°C measures
21
30 sec
Q.
The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?
22
30 sec
Q.
The unit(s) for heat(thermal energy) is ______
23
30 sec
Q.
A high specific heat means it requires less energy to change temperature.
24
30 sec
Q.
Using the specific heat equation, Q=mc∆t, the symbol for specific heat is ....
25
30 sec
Q.
Using the specific heat equation, Q=mc∆t, the symbol for mass is ....
26
30 sec
Q.
Using the specific heat equation, Q=mC∆t, the symbol for heat/thermal energy is ....
27
30 sec
Q.
Using the specific heat equation, Q=mC∆t, the symbol for change in temperature is ....
28
30 sec
Q.
The temperature of a sample of water increases from 20°C to 46.6°C as it absorbs 5650 Joules of heat. What is the mass of the sample? Specific heat of water is 4.18 J/gºC
29
30 sec
Q.
When heated, the temperature of a water sample increased from 15°C to 39°C. It absorbed 4300 joules of heat. What is the mass of the sample? Specific heat of water is 4.18 J/gºC
