Lab 1

Question 1

what can science be defined as

Answer 1

quest to uncover and investigate natural phenomena

Question 2

if a hypothesis is rejected, what should happen

Answer 2

be modified and a new experiment should take place

Question 3

what is the process of the scientific method

Answer 3

observation
question
hypothesis
design experiment
gather data
conclusions

Question 4

what are the requirements for a phenomenon to be explored

Answer 4

testable
well-defined
measurable
controllable

Question 5

hypothesis

Answer 5

tentatively explains something observed and proposes an answer to a question

Question 6

what does a hypothesis have to

Answer 6

testable and falsifiable

Question 7

how does a hypothesis have to be falsifiable

Answer 7

it must be possible that results from an experiment do not support the explanation

Question 8

null hypothesis

Answer 8

nothing happens so no change occurs
- usually test this one

Question 9

practice making a hypothesis

Answer 9

look at packet or look up online

Question 10

what are the two types of hypothesis

Answer 10

1. inductive- statement (usually don’t test)
2. deductive- “if” and “then”

Question 11

dependent variable

Answer 11

• recordable observation
• outcome being measured
• something that can be measured, counted, or recorded
• in response to experimental conditions

Question 12

independent variable

Answer 12

• condition that is manipulated
• most important
• also called manipulative variable
• variable being tested

Question 13

why is it important to only have one independent variable

Answer 13

so you know what is causing change

Question 14

why is it acceptable to have more than one dependent variable

Answer 14

It allows for a more comprehensive and efficient analysis

Question 15

controlled variable/constants

Answer 15

-variables that could be an alternative independent variable
- must be kept constant
- if you can’t control everything, you’ll have large samples to test

Question 16

experimental group/treatment

Answer 16

group that receives the variable or treatment being tested
- exposed to the independent variable
- determinine the effect of the independent variable and tests the hypothesis in an experiment

Question 17

level of treatment

Answer 17

value set for the independent variable
- different variations of the independent variable that are applied to experimental group

Question 18

control group

Answer 18

does not receive the treatment
- serves as baseline that allows us to see what is really due to the independent variable
- group that doesn’t get independent variable

Question 19

how are predictions wrote

Answer 19

form of if/then statements
- at the “then” spot, you need to target a dependent variable
- have to have deductive hypothesis to test

Question 20

what is the prediction always based on

Answer 20

particular experiment designed to test a specific hypothesis

Question 21

what happens if the results do not match the prediction

Answer 21

hypothesis is falsified

Question 22

when is a bar graph constructed

Answer 22

when data for independent variable are discrete categories

Question 23

when is a line graph constructed

Answer 23

when data for independent variable are continuously variable

Question 24

where is the independent variable plotted on

Answer 24

x-axis

Question 25

where is the dependent variable plotted on

Answer 25

y-axis

Question 26

how to write a title

Answer 26

• written below figure
• The effect of the (independent variable) on the (dependent variable)

Question 27

theory

Answer 27

hypothesis which has been repeatedly tested and supported by large quantities of fata

Question 28

dispersal

Answer 28

way for plants to spread their offspring

Question 29

longer it takes for fruit to get to ground…

Answer 29

farther fruit can land from parent plant

Question 30

dispersal far from parent plant is considered

Answer 30

an important adaptation for increasing survival rates

Question 31

as wing length decreased in the samaras, what happened

Answer 31

descent rate increased
- this is bad