Chapter 1 - Intro To Physical Science

Question 0

What is science?

Answer 0

Science is a way of learning about the natural world by gathering information.

Question 1

What is physical science?

Answer 1

Physical science is the study of matter, energy, and the changes they undergo.

Question 2

What is observing?

Answer 2

Observing means using one or more senses to gather information.

Question 3

What are two types of observing?

Answer 3

Qualitative and quantitative observations

Question 4

What is inferring?

Answer 4

Inferring is when you explain your observations.

Question 5

What is predicting?

Answer 5

Predicting is making a forecast of what will happen in the future based on past evidence or experience.

Question 6

What is chemistry?

Answer 6

Chemistry is the study of the properties of matter and how matter changes.

Question 7

What is physics?

Answer 7

Physics is the study of matter and energy and how they interact.

Question 8

What are three skills that scientists use to learn more about the natural world.

Answer 8

Observing, predicting, and inferring

Question 9

What is scientific inquiry

Answer 9

Refers to the different ways scientists study the natural world

Question 10

What is a hypothesis?

Answer 10

A possible answer to a scientific question or explanation for a set of observations

Question 11

What is a variable?

Answer 11

A factor that can change in an experiment

Question 12

What is a manipulated/independent variable?

Answer 12

A variable that is purposefully changed

Question 13

What is a responding/dependent variable?

Answer 13

A variable that is expected to change because of the manipulated variable

Question 14

What is a controlled experiment?

Answer 14

An investigation in which all variables except one remain the same

Question 15

What is data?

Answer 15

Facts, figures, and other evidence gathered through observations

Question 16

What does a conclusion do?

Answer 16

States whether or not the data in an experiment supports the hypothesis

Question 17

What is communicating?

Answer 17

Sharing ideas and conclusions with others through writing and speaking

Question 18

What is a scientific law?

Answer 18

Statement that describes what scientists expect to happen under a particular set of conditions

Question 19

What is a scientific theory?

Answer 19

A well-tested explanation for a wide range of observations or experimental results

Question 20

What are five scientific habits of mind?

Answer 20

Curiosity, honesty, creativity, open-mindedness, and skepticism

Question 21

What are six processes that are often involved in scientific theory?

Answer 21

Posing questions, developing hypotheses, designing experiments, collecting and interpreting data, drawing conclusions, and communicating

Question 22

What is an estimate?

Answer 22

An approximation if a number based on reasonable assumptions

Question 23

When would you use estimates?

Answer 23

When you can’t obtain exact numbers

Question 24

What does precision refer to?

Answer 24

How close a group of measurements are to each other

Question 25

Both ____ and _____ are important when you make measurements.

Answer 25

Accuracy, precision

Question 26

What does accuracy refer to

Answer 26

How close a measurement is to the true or accepted answer

Question 27

How do you find the mean, median, and mode?

Answer 27

Mean-add up all numbers & divide by total number of items
Median- take the middle value or two in the middle and add together & divide the sum by two
Mode- the number that appears most often in a set

Question 28

What are significant figures?

Answer 28

All of the digits that have been measured exactly, plus one digit whose value has been estimated

Question 29

What do good preparations in a lab do?

Answer 29

Help you stay safe

Question 30

Safety symbol for safety goggles

Answer 30

Safety goggles

Question 31

Safety symbol for lab apron

Answer 31

Person standing with a lab apron

Question 32

Safety symbol for breakage

Answer 32

Broken test tube

Question 33

Safety symbol for heat-resistant gloves

Answer 33

Mitten

Question 34

Safety symbol for plastic gloves

Answer 34

Two gloves with finger holes

Question 35

Safety symbol for heating

Answer 35

Hot hands holding a test tube

Question 36

Safety symbol for flames

Answer 36

Fire

Question 37

Safety symbol for no flames

Answer 37

Slash mark over flames symbol

Question 38

Safety symbol for corrosive chemical

Answer 38

Beaker pouring liquid onto burnt surface

Question 39

Safety symbol for poison

Answer 39

Skull and crossbones

Question 40

Safety symbol for fumes

Answer 40

Beaker emitting fumes

Question 41

Safety symbol for sharp objects

Answer 41

Scissors

Question 42

Safety symbol for animal safety

Answer 42

Mouse

Question 43

Safety symbol for plant safety

Answer 43

Branch with three leaves

Question 44

Safety symbol for electric shock

Answer 44

Lightning symbol and electric socket

Question 45

Safety symbol for physical safety

Answer 45

Person falling

Question 46

Safety symbol for disposal

Answer 46

Trash can

Question 47

Safety symbol for hand washing

Answer 47

Hand and running faucet

Question 48

Safety symbol for general safety awareness

Answer 48

Exclamation mark inside of triangle