1st 9 Week Tests

Question 0

How are science and technology related?

Answer 0

Advances in one lead to advances in the other

Question 1

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

Answer 1

Science

Question 2

What are some branches of natural science?

Answer 2

Biology, astronomy, chemistry, geology, and physics

Question 3

What happens when data does not support the hypothesis?

Answer 3

The hypothesis is revised

Question 4

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

Answer 4

A model

Question 5

Why are scientific models important?

Answer 5

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

Question 6

How do scientists communicate the results of an investigation?

Answer 6

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

Question 7

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

Answer 7

Controlled experiment

Question 8

What are the two main areas of physical science?

Answer 8

Physics and chemistry

Question 9

What 3 sciences is natural science divided into?

Answer 9

Life science, earth and space science, and physical science

Question 10

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

Answer 10

Scientific law

Question 11

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

Answer 11

Scientific method

Question 12

What is information obtained through the senses?

Answer 12

Observation

Question 13

What is a proposed answer to a question?

Answer 13

Hypothesis

Question 14

What is another name for “manipulated variable”?

Answer 14

Independent variable

Question 15

What is the variable that causes change in another called?

Answer 15

Manipulated (independent) variable

Question 16

What is another name for “responding variable”?

Answer 16

Dependent variable

Question 17

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

Answer 17

Responding (dependent) variable

Question 18

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

Answer 18

Scientific theory

Question 19

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

Answer 19

Chemistry

Question 20

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

Answer 20

Geology

Question 21

What is the study of the universe beyond earth?

Answer 21

Astronomy

Question 22

What is life science called?

Answer 22

Biology

Question 23

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

Answer 23

Physics

Question 24

What is the use of knowledge to solve practical problems?

Answer 24

Technology

Question 25

What are the three types of variables in an experiment?

Answer 25

Controlled, manipulated, responding

Question 26

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

Answer 26

Left

Question 27

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

Answer 27

Right

Question 28

Why is scientific notation so useful to scientists?

Answer 28

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

Question 29

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

Answer 29

Numbers and units

Question 30

What is the formula for density?

Answer 30

Mass _____ Volume

Question 31

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

Answer 31

Direct proportion

Question 32

What is an instrument that measures temperature?

Answer 32

Thermometer

Question 33

What is a gauge of how exact a measurement is?

Answer 33

Precision

Question 34

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

Answer 34

Accuracy

Question 35

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

Answer 35

Significant figure

Question 36

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

Answer 36

Volume

Question 37

What is a straight line distance between 2 points?

Answer 37

Length

Question 38

What is quantity of matter in an object?

Answer 38

Mass

Question 39

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

Answer 39

Slope

Question 40

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

Answer 40

Inverse proportion

Question 41

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

Answer 41

Scientific notation

Question 42

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

Answer 42

Conversion factor

Question 43

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

Answer 43

Density

Question 44

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

Answer 44

Element

Question 45

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

Answer 45

Compound

Question 46

What is an example of a mixture?

Answer 46

Sand

Question 47

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

Answer 47

Homogeneous

Question 48

What is an example of a heterogeneous mixture?

Answer 48

Jar of mixed nuts

Question 49

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

Answer 49

Colloid

Question 50

What is the best use for a bar graph?

Answer 50

Comparing 2 or more things

Question 51

What is the best use for a line graph?

Answer 51

To show changes over time

Question 52

What is the best use for a circle graph?

Answer 52

Show percentages

Question 53

Slope is equal to what?

Answer 53

Rise over run

Question 54

Give an example of something malleable.

Answer 54

Gold

Question 55

Give an example of something with a high viscosity.

Answer 55

Maple syrup

Question 56

What material is malleable and conducts electricity?

Answer 56

Any metal

Question 57

What is the difference between distillation and filtration?

Answer 57

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

Question 58

What does an example of a physical change?

Answer 58

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

Question 59

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

Answer 59

High

Question 60

What is a clue that a chemical change has occurred?

Answer 60

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

Question 61

Why does an element have a fixed composition?

Answer 61

It only has one kind of atom

Question 62

Why does rust form on iron when exposed to air?

Answer 62

They have a high reactivity

Question 63

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

Answer 63

Precipitate

Question 64

What are 7 physical properties?

Answer 64

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

Question 65

What are two chemical properties?

Answer 65

Reactivity, malleability

Question 66

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

Answer 66

Chemical

Question 67

Describe a gas in terms of volume and shape.

Answer 67

``` No definite (variable) shape No definite (variable) volume ```

Question 68

Describe a liquid in terms of volume and shape.

Answer 68

``` No definite (variable) shape definite volume ```

Question 69

Describe a solid in terms of volume and shape.

Answer 69

definite shape | definite volume

Question 70

What is pressure?

Answer 70

The result of a force distributed over an area

Question 71

What affects the pressure of an enclosed gas?

Answer 71

Temperature, volume, and the number of particles

Question 72

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?

Answer 72

Increase

Question 73

State Charle's law.

Answer 73

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

Question 74

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?

Answer 74

200 kilopascal

Question 75

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

Answer 75

It stay the same

Question 76

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

Answer 76

Melting

Question 77

Which phase changes are exothermic?

Answer 77

Freezing, deposition, and condensation

Question 78

Which phase changes are endothermic?

Answer 78

Sublimation, vaporization, and melting

Question 79

What does the kinetic theory state?

Answer 79

All particles of matter are in constant motion

Question 80

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

Answer 80

Increases, temperature

Question 81

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

Answer 81

Temperature, volume