Test - Unit 1 Scientific Method

Question 1

1. What is the part of an example that serves as a standard for comparison?

Answer 1

Control group

Unit 1 Concept 4 notes: Scientific Method
Pg. 26

Question 2

A factor in an experiment that changes in response to the independent variable is the_

Answer 2

Dependent variable

Unit 1 Concept 4 notes: Scientific Method
Pg. 26

Question 3

Is Discarding data that doesn’t match the hypothesis a step in the Scientific Method?

Answer 3

No. You never do this.

Unit 1 Concept 4: Scientific Method
Pg. 26

Question 4

What is the first thing you should do always do before starting a lab?

Answer 4

Tell the teacher Use broken glass and dispose it

Concept 1 Notes: Lab Basics- Safety and Equipment
Pg. 4

Question 5

What does pass stand for?

Answer 5

Pull aim squeeze and sweep

Unit 1 Concept 1 notes: Lab Basics - Safety and Equipment
Pg. 4

Question 6

What is the SI unit for length?

Answer 6

Meter

Unit 1. Concept 2 notes: Measurement
Pg. 10

Question 7

An experiment was designed to investigate the effect of caffeine on the heartbeat of water fleas. Two populations of water fleas were cultured. Both populations had water with the same mineral content, were supplied with identical amounts of bacteria as food, received the same amount of light, and had their temperature maintained at 20 degrees Celsius. Every two hours, water fleas from both populations were selected and their heartbeats were monitored A had caffeine administrated five minutes before their heartbeat was checked. The fleas of populations B were given nothing. What is the independent variable in this experiment?

Answer 7

Caffeine or not (amount of caffeine)

Unit 1 Concept 4 notes: Scientific Method
Pg 26

Question 8

An experiment was designed to investigate the effect of caffeine on the heartbeat of water fleas. Two populations of water fleas were cultured. Both populations had water with the same mineral content, were supplied with identical amounts of bacteria as food, received the same amount of light, and had their temperature maintained at 20 degrees Celsius. Every two hours, water fleas from both populations were selected and their heartbeats were monitored A had caffeine administrated five minutes before their heartbeat was checked. The fleas of populations B were given nothing.
What is the dependent variable in this experiment?

Answer 8

Heartbeat
Unit 1 Concept 4: Scientific Method
Pg 26

Question 9

An experiment was designed to investigate the effect of caffeine on the heartbeat of water fleas. Two populations of water fleas were cultured. Both populations had water with the same mineral content, were supplied with identical amounts of bacteria as food, received the same amount of light, and had their temperature maintained at 20 degrees Celsius. Every two hours, water fleas from both populations were selected and their heartbeats were monitored A had caffeine administrated five minutes before their heartbeat was checked. The fleas of populations B were given nothing.
Write a hypothesis, in the correct format for this experiment.

Answer 9

If the amount of caffeine goes up, then the heartbeat will go up.

Unit 1. Concept 4: Scientific Method
Pg 26

Question 10

Hot plate

Answer 10

Electricity powered plate for heating up chemicals.

Concept 1 Notes: Lab basics - safety and Equipment

Question 11

What is the independent variable in the graph?

Answer 11

Whatever is on the X axis.

Concept 2 notes: measurements
Pg. 11