Unit 1 How Scientists Work

Question 1

triple beam balance

Answer 1

a tool used to measure mass in grams

Question 2

graduated cylinder

Answer 2

a tool used to measure volume of liquids in milliliters; usually a more accurate measurement

Question 3

thermometer

Answer 3

a tool used to measure the temperature in degrees Celsius

Question 4

meter stick

Answer 4

a tool used to measure distance or length in millimeters, centimeters, meters, or kilometers

Question 5

spring scale

Answer 5

a tool used to measure force in Newtons

Question 6

hand lens

Answer 6

a tool used to observe objects closely

Question 7

hot plate

Answer 7

a tool used to add heat to materials

Question 8

stopwatch

Answer 8

a tool used to measure time in seconds, minutes, hours, etc.

Question 9

prism

Answer 9

a glass bar that separates white light into the colors of the rainbow; an example of how light can refract.

Question 10

safety tools

Answer 10

lab apron, gloves, goggles, fire blanket, fire extinguisher, eye wash station

Question 11

hypothesis

Answer 11

an educated guess; an idea that can be tested by an experiment or an observation

Question 12

variable

Answer 12

any factor that can change in an experiment (one thing changes, everything else stays the same)

Question 13

data

Answer 13

the pieces of information collected in an investigation

Question 14

trial

Answer 14

a repeat of a test or observation; the more you do, the more you can trust the data that you collect

Question 14

trial

Answer 14

a repeat of a test or observation; the more you do, the more you can trust the data that you collect

Question 15

conclusion

Answer 15

tells what an investigation showed you; must be based on your observations and data you collected.

Question 16

bar graph

Answer 16

shows the same kind of data for different things; used to compare data

Question 17

line graph

Answer 17

shows how data changed as time passed; the shape tells you whether something increased, decreased, or stayed the same.

Question 18

inference

Answer 18

an explanation that you figure out without actually observing something yourself

Question 19

beaker

Answer 19

a tool used to measure the volume of liquids; not as accurate typically

Question 20

experiment

Answer 20

a scientific investigation that tests a hypothesis

Question 21

model

Answer 21

a picture, idea, or object that represents an object or process

Question 22

observation

Answer 22

the act of careful watching and listening; the activity of paying close attention to someone or something in order to get information

Question 23

procedure

Answer 23

the steps that you follow in an experiment

Question 24

centimeter

Answer 24

unit of measurement for length (small)

Question 25

gram

Answer 25

unit of measurement for mass (small)

Question 26

milliliter

Answer 26

unit of measurement for volume (small)

Question 27

terrarium

Answer 27

a glass or plastic box that is used for growing plants or keeping small animals indoorss

Question 28

disposal

Answer 28

to throw something away

Question 29

waft

Answer 29

a safe way to smell things by fanning air toward your nose

Question 30

analyze

Answer 30

to study (something) closely & carefully; to learn the nature & relationship of the parts of (something) by a close & careful examination

Question 31

classify

Answer 31

to arrange (people or things) into groups based on ways that they are alike; to sort