Intro to Biology: Scientific Method, Safety, Skills Flashcards

Cards
 Quiz

Matching

UPDATED
Bingo

Print Print
Set Details Share
created 3 years ago by staceysavage
149 views
updated 3 years ago by staceysavage
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:

1

Scientific Method

series of steps that help scientists solve a problem

2

Steps of the Scientific Method (7)

1. Observe and State the Problem

2. Form a hypothesis

3. Test the hypothesis

4. Record and analyze data

5. Form a conclusion

6. Replication

7. Theory

3

hypothesis

an tentative educated explanation for the observation or problem

4

controlled experiment

2 part test that allows the scientist to specifically test the effects of a single factor, called the independent variable . (control setup vs. experimental setup)

5

constants

  • any other variable that may have an effect on the outcome of your experiment must be kept constant so that the only variable that will cause change is the one you are testing

6

independent variable

the factor being tested or manipulated during the experiment

(The IF in the hypothesis)

7

dependent variable

the change measured during the experiment

direct result of the independent variable

8

relationship between the independent variable and dependent variable

the dependent variable depends upon the independent variable

ex. the growth of the plant (DV) is dependent on the amount of light (IV) it gets.

9

quantitative data

information collected from an experiment that is numerical

ex. The tree produced 75 apples.

The mouse weighed 20 grams.

10

qualitative data

information from an experiment that is descriptive

ex. The flower is purple.

The sand feels coarse.

11

CER

Claim

Evidence

Reasoning

Used to form a conclusion

12

First aid kit

used to mend minor injuries.

13

goggles

used to protect eyes from chemicals, glass, etc.

14

lab apron

worn to protect clothing from splashing chemicals

15

Safety Shower

used when someone has spilled harmful chemicals on their skin

16

eye wash station

used for an eye emergency

used for 15-20 minutes to flush chemical out of the eye

17

fire blanket

used for smothering flames, used if fire is on a person

18

fire extinguisher

used to put out small fires

19

gloves

worn to protect skin on the hands from chemicals or heat

20

temperature

uses a thermometer to measure the amount of heat present

measured in degrees Celsius

21

volume

used to measure the amount of a liquid

uses a graduated cylinder

measured in mL or liters

22

observation

using the senses to study the world (sight, sound, smell, taste, touch)

23

Mass

used to measure the amount of matter in an object

uses a triple beam balance

measured in grams

24

mortar and pestle

tool used to crush or grind a substance

25

beaker

simple container for stirring, mixing and heating materials

26

test tube

slender container that can hold small amounts of liquid

27

erlenmeyer flask

container with wide base, cylindrical neck

good for swirling, mixing and heating chemicals without spilling

28

graduated cylinder

used to measure the volume of a liquid

read at the meniscus

29

petri dish

used to grow bacteria or hold small organisms

30

pipet

used to transfer liquids

31

medicine dropper

used to transfer small amounts of liquids (few drops) from one container to another

32

forceps

used to grasp small objects

33

test tube tongs

tool used to pick up a hot test tube

34

hot hand gripper

protection for the hands from hot objects

35

pipet pump

used to draw liquids up into a graduated pipet

36

glass stir rod

used for stirring chemical solutions