# Lab Chapter 2: Scientific Method Flashcards

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1

If conducting an experiment based on this observation, which would not be a control?

I caught four fish at the seven o’clock in the morning but didn’t catch any at noon.

time of day fishing

2

What type of graph would be appropriate for this data set?

line

3

Determine if this statement is testable or not testable.

For the past two days the clouds have come out at p.m. and it has started raining at 3:15 p.m.

not testable

Weather is not a controllable factor, therefore, we can not conduct a controlled experiment with this changing factor.

4

Based on the information in Table 2, what patterns do you observe?

As more dissolved oxygen is found present in the water sample, it can be predicted that more fish will be present in the area where the water sample is taken.

As the amount of dissolved oxygen increases the fish population increases up until a certain point. Levels greater than 12 ppm see a slight decrease in the number of fish.

5

Which of these represents a possible control water quality vs. fish population?

All:

type of fish

water temperature

food

light

6

Determine if this statement is testable or not testable.

The salaries at Smithand Company are based on the number of sales and Billy makes 3,000 dollars more than Joe.

testable

An experiment can be conducted that tests the amount of sales and the resulting salaries.

7

Which represents the independent variable in the experiment in Exercise 1 testing the Water Quality vs. Fish Population?

dissolved oxygen concentration

8

Based on this data, which of these statements are supported?

The number of fish in the body of water increases along with dissolved oxygen up to about 12 ppm.

9

Determine if this statement is testable or not testable.

Ice cream melts faster on a warm summer day than on a cold winter day.

testable

10

Write a hypothesis based on this observation.

Ice cream melts faster on a warm summer day than on a cold winter day.

Hypothesis: Heat energy flows more quickly when there is a bigger gap between the temperature of the ice cream and the temperature of the air outside.

11

Determine if this statement is testable or not testable.

The teller at the bank with brown hair and brown eyes and is taller than the other tellers.

not testable

12

Determine if this statement is testable or not testable.

For the past two days the clouds have come out at p.m. and it has started raining at 3:15 p.m.

not testable

Weather is not a controllable factor, therefore, we can not conduct a controlled experiment with this changing factor.

13

Determine if this statement is testable or not testable.

The Italian restaurant across the street closes at 9 p.m. but the one two blocks away closes at 10 p.m.

not testable

14

Determine if this statement is testable or not testable.

Bob bought a new blue shirt with a golf club on the back for twenty dollars because he did not want to spend the forty dollars it costs for a blue shirt with a golf club on the front.

no testable

15

Which represents the dependent variable in the experiment in Exercise 1 testing the Water Quality vs. Fish Population?

number of fish

16

Determine if this statement is testable or not testable.

George did not sleep at all last night because he was up finishing his paper.

not testable

A test could be conducted to determine if George's sleep was inhibited by finishing his paper.

17

Determine if this statement is testable or not testable.

When a plant is placed on a window sill, it grows faster than when it is placed on a coffee table in the middle of the living room.

testable

Yes, you can create a controlled experiment using plants and differing the amount of light they receive.

18

Determine if this statement is testable or not testable.

I caught four fish at the seven o’clock in the morning but didn’t catch any at noon.

testable

You can create an experiment that tests the amount of fish caught at different times of the day.

19

Determine if this statement is testable or not testable.

The salaries at Smithand Company are based on the number of sales and Billy makes 3,000 dollars more than Joe.

testable

An experiment can be conducted that tests the amount of sales and the resulting salaries.