6.2- 7th grade

1.

1 point

Hot and cold are words used in everyday language to describe ___________.

2.

1 point

What is ____________?

3.

1 point

Remember that any material or object is made up of _________.

4.

1 point

In solids, liquids, and gases the atoms do not move in a single ___________.

5.

1 point

Instead they move in all _____________.

6.

1 point

In a _________, atoms are far apart and can move in all directions.

7.

1 point

In _________, atoms are closer together and can't move as far as in a gas.

8.

1 point

In ___________, atoms are bound more tightly together and can move only short distances.

9.

1 point

Atoms in a _______ vibrate back and forth.

10.

1 point

Because the atoms are moving, they have _______________.

11.

1 point

The __________ the atoms are moving, the more kinetic energy they have.

12.

1 point

___________ is a measure of the average kinetic energy of the atoms in an object.

13.

1 point

When an object's temperature is higher, its _________ have more kinetic energy.

14.

1 point

At the higher temperature, the __________ are moving faster and have more kinetic energy.

15.

1 point

But atoms are so _______ that even a tiny piece of material consists of trillions and trillions of atoms.

16.

1 point

One _________ scale you might be familiar with is the Fahrenheit scale.

17.

1 point

The space between the boiling point and the freezing point is divided into _______ equal degrees.

18.

1 point

The _______ scale today is used mainly in the United States.

19.

1 point

Another temperature scale that is used more widely throughout the world is the _______________.

20.

1 point

Kinetic energy from the moving atoms and molecules in your hand is transferred by _____________ to the atoms and molecules in the tea.

21.

1 point

A transfer of energy from one object to another due to a difference in temperature is called _________.

22.

1 point

Heat flows from _______ objects to colder objects.

23.

1 point

One is the amount of _______ in the object.

24.

1 point

The other is the kinds of atoms the material in the _________.

25.

1 point

A transfer of energy occurs if there is a ____________ difference between two areas in contact.

26.

1 point

Heat is transferred from warmer places to ________ ones.

27.

1 point

This transfer can take place in three ways-------- radiation, ______, and convection.

28.

1 point

___________ transfers heat mainly through solids and liquids.

29.

1 point

____________ transfers heat through liquids and gases.

30.

1 point

____________ can transfer energy through space.

31.

1 point

The spoon handle became hot because of _____________.

32.

1 point

_________ is the transfer of energy by collisions between the atoms in a material.

33.

1 point

Conduction usually occur in ___________.

34.

1 point

This is one time when you want to _________ heat rapidly.

35.

1 point

Materials through which it is easy to transfer energy are _______ conductors.

36.

1 point

Most metals are good conductors of ________.

37.

1 point

Metals such as gold, silver, and copper are the best _________ conductors.

38.

1 point

A _________ bottom conducts heat more evenly.

39.

1 point

This allows ______ to cook more evenly.

40.

1 point

Some materials are ________ conductors of heat.

41.

1 point

These materials can be used as thermal ____________.

42.

1 point

The clothes and the blanket are _________ conductors of heat.

43.

1 point

Air is a good ___________, so materials that contain air are also good insulators.

44.

1 point

Materials made of ____________ also are often good insulators.

45.

1 point

___________ transfers heat when particles move between objects or areas that differ in temperature.

46.

1 point

This type of transfer is most common in ___________ and liquids.

47.

1 point

This causes density to decrease as ___________ increases.

48.

1 point

Some homes are heated by ______________.

49.

1 point

Air is warmed in the __________.

50.

1 point

______________ and hawks float effortlessly high in the air.

51.

1 point

Sometimes a bird can stay in the air without flapping its wings because it is held up by a ____________.

52.

1 point

Convection also occurs in ___________.

53.

1 point

___________ transfers energy by waves.

54.

1 point

The Sun transfers energy to _______ through radiation.