Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

8 Science > 1st 9 Week Tests > Flashcards

1st 9 Week Tests Flashcards

0
Q

How are science and technology related?

A

Advances in one lead to advances in the other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is a system of knowledge and methods used to find that knowledge?

A

Science

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are some branches of natural science?

A

Biology, astronomy, chemistry, geology, and physics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens when data does not support the hypothesis?

A

The hypothesis is revised

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a physical or mental representation of an object or event?

A

A model

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why are scientific models important?

A

They help us visualize things that are complex, very large, or very small

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do scientists communicate the results of an investigation?

A

By publishing articles in a scientific journal or by giving talks at scientific conferences

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

An experiment that has only one variable, the independent or manipulated variable, being changed at a time is what kind of experiment?

A

Controlled experiment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the two main areas of physical science?

A

Physics and chemistry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What 3 sciences is natural science divided into?

A

Life science, earth and space science, and physical science

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a statement that summarizes a pattern found in nature?

A

Scientific law

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is an organized plan for gathering, organizing, and communicating information?

A

Scientific method

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is information obtained through the senses?

A

Observation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is a proposed answer to a question?

A

Hypothesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is another name for “manipulated variable”?

A

Independent variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the variable that causes change in another called?

A

Manipulated (independent) variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is another name for “responding variable”?

A

Dependent variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the variable that changes in response to the manipulated (independent) variable?

A

Responding (dependent) variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is a well tested explanation for a set of observations or experimental results?

A

Scientific theory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the study of the composition, structure, properties, and reactions of matter?

A

Chemistry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the study of the origin, history, and structure of earth?

A

Geology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the study of the universe beyond earth?

A

Astronomy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is life science called?

A

Biology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the study of matter and energy and the interactions between the two forces in motion?

A

Physics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the use of knowledge to solve practical problems?

A

Technology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are the three types of variables in an experiment?

A

Controlled, manipulated, responding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

When writing a number in scientific notation, a positive exponents means to move the decimal right or left?

A

Left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

When writing a number in scientific notation, a negative exponent means to move the decimal right or left?

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Why is scientific notation so useful to scientists?

A

It makes it easier for scientists to work with very large or small numbers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What two things do you need to include in a measurement to have it make sense?

A

Numbers and units

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the formula for density?

A

Mass
_____
Volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is a relationship in which the ratio of two variables is constant (one goes up or down at the other does the same)?

A

Direct proportion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is an instrument that measures temperature?

A

Thermometer

33
Q

What is a gauge of how exact a measurement is?

A

Precision

34
Q

What is the closeness of a measurement to the actual value of what is being measured?

A

Accuracy

35
Q

What are all the digits that are known in a measurement?

A

Significant figure

36
Q

What is the amount of space taken up by an object?

A

Volume

37
Q

What is a straight line distance between 2 points?

A

Length

38
Q

What is quantity of matter in an object?

A

Mass

39
Q

What is steepness; ratio of vertical change to horizontal change; rise over run?

A

Slope

40
Q

What is the ratio in which the two variables is constant?

A

Inverse proportion

41
Q

What is the way of expressing the product of a number between 1-10 and a power of 10?

A

Scientific notation

42
Q

What is a ratio of equal measurements that is used to convert one unit to another?

A

Conversion factor

43
Q

What is the ratio of an objects mass to its volume?

A

Density

44
Q

What is a substance that is made of only one kind of atom?

A

Element

45
Q

What is a material that contains two or more elements joined in fixed proportions?

A

Compound

46
Q

What is an example of a mixture?

A

Sand

47
Q

What is a mixture that appears to contain only one substance?

A

Homogeneous

48
Q

What is an example of a heterogeneous mixture?

A

Jar of mixed nuts

49
Q

If you are about to open a container of soy milk and it says to shake well, what is it most likely?

A

Colloid

50
Q

What is the best use for a bar graph?

A

Comparing 2 or more things

51
Q

What is the best use for a line graph?

A

To show changes over time

52
Q

What is the best use for a circle graph?

A

Show percentages

53
Q

Slope is equal to what?

A

Rise over run

54
Q

Give an example of something malleable.

A

Gold

55
Q

Give an example of something with a high viscosity.

A

Maple syrup

56
Q

What material is malleable and conducts electricity?

A

Any metal

57
Q

What is the difference between distillation and filtration?

A

Distillation separates substances based on their boiling point
Filtration separates substances based on their particle size

58
Q

What does an example of a physical change?

A

Sawing wood in half, cutting hair, heating metal until it’s red hot, etc.

59
Q

A substance that easily combines chemically with other substances has a high or low reactivity?

A

High

60
Q

What is a clue that a chemical change has occurred?

A

Change in color, formation of a precipitate, production of a gas

61
Q

Why does an element have a fixed composition?

A

It only has one kind of atom

62
Q

Why does rust form on iron when exposed to air?

A

They have a high reactivity

63
Q

What is a solid that forms and separates from a liquid mixture ?

A

Precipitate

64
Q

What are 7 physical properties?

A

Conductivity, malleability, hardness, melting point, density, viscosity, and boiling point

65
Q

What are two chemical properties?

A

Reactivity, malleability

66
Q

What type of change (physical or chemical) occurs when mold grows on a strawberry?

A

Chemical

67
Q

Describe a gas in terms of volume and shape.

A 
No definite (variable) shape
No definite (variable) volume
68
Q

Describe a liquid in terms of volume and shape.

A 
No definite (variable) shape
definite volume
69
Q

Describe a solid in terms of volume and shape.

A

definite shape

definite volume

70
Q

What is pressure?

A

The result of a force distributed over an area

71
Q

What affects the pressure of an enclosed gas?

A

Temperature, volume, and the number of particles

72
Q

If the temperature and volume in a closed container of gas remain constant, and if the number of particles of the gas remains constant, would the gas pressure go up or down?

A

Increase

73
Q

State Charle’s law.

A

The volume of a gas is directly proportional to its temperature in kelvins if the pressure and the number of particles is constant

74
Q

If the volume of a cylinder is reduced from 4.0 liters to 2.0 liters, the pressure of the gas in the cylinder will change from 100 kilopascal to what?

A

200 kilopascal

75
Q

What happens to the temperature of a substance during a phase change?

A

It stay the same

76
Q

The phase change in which a substance changes from a solid to a liquid is what?

A

Melting

77
Q

Which phase changes are exothermic?

A

Freezing, deposition, and condensation

78
Q

Which phase changes are endothermic?

A

Sublimation, vaporization, and melting

79
Q

What does the kinetic theory state?

A

All particles of matter are in constant motion

80
Q

Reducing the volume of a gas ___________ it’s pressure if the __________ of the gas and the number of particles are constant.

A

Increases, temperature

81
Q

A graph representing Charle’s law shows that the _________ of a gas increases at the same rate as the ________ of the gas.

A

Temperature, volume

8 Science (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions