WorksheetsFINAL Purcaro ENERGY TRANSFER, HEAT, MATTER, THERMAL ENERGY
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
1. Solid particles are
a)
Loosely bonded and flowing
b)
Tightly packed
c)
Free to fly around
d)
Very hot
2.
2. The temperature at which a substance changes from a solid to a liquid.
a)
Boiling point
b)
Melting point
c)
Freezing point
3.
3. Particles move the slowest in what phases?
a)
Solid
b)
Liquid
c)
Gas
4.
4. The space between particles is widest in which phases?
a)
Solid
b)
Liquid
c)
Gas
5.
5. Which theory describes the arrangement and movement of particles in solids, liquids and gases?
a)
Theory or relativity
b)
Kinetic theory
c)
Atomic theory
6.
6. In which state of matter are the particles mostly touching but arranged in a random way?
a)
Solid
b)
Liquid
c)
Gas
7.
7. In which state of matter do the particles have the most energy?
a)
Solid
b)
Liquid
c)
Gas
8.
8. Why can liquids not be compressed easily?
a)
The particles are in a random arrangement
b)
The particles are closely packed
c)
The particles are free to move over each other
9.
9. If the liquid is heated, what type of change occurs?
a)
Increased energy
b)
Condensation
c)
Freezing
d)
Sublimation
10.
10. If water vapor is cooled what is the change that happens?
a)
Evaporation
b)
Condensation
c)
Freezing
d)
Sublimation
11.
11. When a substance changes from solid to gas and does not go through the liquid phase it is called what?
a)
Evaporation
b)
Condensation
c)
Freezing
d)
Sublimation
12.
12. If two objects have different temperatures, heat will flow from the warmer object to the cooler object until ___________?
a)
They both have an equal temperature
b)
One object runs out of energy
c)
One object reaches a temperature of zero
13.
13. As a substance is cooled,
a)
The molecules become denser and slower
b)
The molecules become less dense and faster
c)
The molecules stay the same
d)
None of these
14.
14. What is thermal energy?
a)
A form of energy that shows brightness
b)
Potential energy
c)
A form of energy that is transferred between systems and objects
d)
A form of energy that you can hear
15.
15. A piece of metal feels colder than a piece of wood at the same temperature. Which explanation explains this phenomenon?
a)
Metals in general are good conductors while wood is an insulator
b)
Wood is a poor insulator but metals of have atoms that move more slowly than wood
c)
Metals are colder than wood
d)
The difference is in the hand, not the wood or metal
16.
16. What is the measurement of average kinetic energy of the particles in a substance?
a)
Celsius
b)
Kelvin
c)
Weight
d)
Temperature
17.
17. The picture shows a closed system that has undergone a change. What has caused this change?
a)
Particles were added to the system
b)
Water was added to the system
c)
Heat was added to the system
d)
Air was added to the system
18.
18. As water in the freezer turns into ice,
a)
The water neither absorbs or release energy
b)
The water absorbs energy from the cold air in the freezer
c)
The particles in the water speed up
d)
The freezer air absorbs heat from the water
19.
19. Compare ice and liquid water.
a)
The water is denser than the ice
b)
The ice is denser than the water
c)
The molecules in ice and water are arranged the same way
20.
20. The faster the molecules are moving,
a)
The higher the temperature
b)
The lower the temperature will be
c)
Particle movement does not relate to temperature
21.
21. When you pick up an ice cube, what happens?
a)
Thermal energy flows from the ice cube to your hand
b)
Thermal energy flows from your hand to the ice cube
c)
Energy flows back and forth between your hand and the ice cube
d)
The ice cube sublimates
22.
23. Heat moves from a cooler object to a warmer object
a)
True
b)
False
23.
24. What is thermal equilibrium?
a)
When two objects are at rest at the same time
b)
Potential energy
c)
When objects reach boiling point
d)
When two objects reach a common temperature
24.
25. What do you think this diagram is showing?
Check all that are true for this model.
a)
This shows thermal expansion of a solid
b)
The molecules are sliding past each other.
c)
Molecules are fast and move freely past each other with no attractive forces
d)
Heated atoms contract
e)
Heated atoms lose kinetic energy.
25.
26. Which of these materials insulates from thermal energy?
a)
Styrofoam
b)
Thick Fabric
c)
Foil
d)
All of these
26.
27. If you were building a thermos to keep liquid warm, what type of materials would you look for?
a)
Insulators
b)
Conductors
c)
Liquid
d)
None of these
27.
28. What do you call the device you design that you are testing?
a)
Device thing
b)
Sample One
c)
The Prototype
d)
The exhibit
28.
29. Why do you have a control when you plan an investigation?
a)
So that you will know who won the race
b)
To minimize the effects of factors other than the one being tested
c)
It is tradition
d)
You don’t really need a control
29.
30. After testing, you may decide to modify your device. This is known as __________.
a)
Prototype
b)
Control
c)
Trial One
d)
Redesigning
30.
31. An ice chest
a)
Minimizes thermal transfer
b)
Maximizes thermal transfer
c)
Uses mostly conductors
31.
32. What type of heat transfer does a thermos prevent?
a)
Convection
b)
Radiation and conduction
c)
Convection and radiation
32.
33. Which type of heat transfer sends heat as waves through empty space?
a)
Convection
b)
Radiation
c)
Conduction
33.
34. What type of heat transfer requires direct contact with the item being heated?
a)
Convection
b)
Radiation
c)
Conduction
34.
35. What type of heat transfer circulates the heat through liquid or gas?
a)
Convection
b)
Radiation
c)
Conduction
35.
36. If a spoon in a cup of soup become warmer, which type of heat transfer is it?
a)
Convection
b)
Radiation
c)
Conduction
36.
37. Water boiling is due to
a)
Convection
b)
Radiation
c)
Conduction
37.
38. When air cools down the molecules
a)
Speed up
b)
Slow down
c)
Stay the same
38.
39. Hot air will
a)
Rise
b)
Sink
c)
Stay where it is
39.
40. Higher temperatures means
a)
Molecules are moving faster
b)
Molecules are slowing down
100 %
