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Scientific Method/Making Connections Flashcards | StudBud
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Scientific Method/Making Connections
Scientific Method/Making Connections
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1
When people watch exciting sports on TV, their pulse rate increases. How can this be tested?
Observing
Controlled Experiment
Watching sports with friends
Turning off TV
2
A student checks his pulse rate before exercising. What is the purpose of this?
Is needed to justify the sample size
Serves as the control for the experiment
Is needed to formulate a hypothesis
Serves as the conclusion for the experiment
3
What is the control group
Group that does not change
Group that keeps everything different
Group that changes
All of the above
4
Which plant is the control group?
The plant without the fertilizer.
The plant receiving 10 ml of fertilizer.
5
Which axis does the dependent variable?
Y axis
X axis
6
What is an independent variable
The variable that reacts to the change
Something that you as the scientist change
7
A marathon runner frequently experiences muscle cramps while running. This is because
The runner running too slowly
The runner warming up before running
Lack of adequate oxygen supply to the muscles
Increased glucose production in the muscle
8
What is a hypothesis?
educated guess or testable prediction
a store in Poland
a factor that is adjusted by the experiment
something that you learn in science
9
In an experiment testing the effect of exercise, the # of times a clothespin can be squeezed is
Dependent Variable
Independent Variable
Hypothesis
Control
10
Why do scientists use the scientific method?
None of the above
Answering questions or problems about the world
To discover new things about the world
To make new ways of answering questions
11
What is a dependent variable?
The variable that reacts to the change
The variable that you change
12
The independent variable in an experiment is:
The variable you keep the same
The variable you change
The variable you measure
13
What is an advantage of a change in pulse rate after exercising?
Blood supplying muscle cell with additional carbon dioxide
Increased blood flow carries excess wastes from muscle cells
Heart produces more energy for the muscles cells
The blood is removing oxygen from muscle cells
14
What would be a hypothesis for the Making Connections Lab?
Can students squeeze a clothespin more times after rest?
Students who rest will squeeze the clothespin more times
Squeeze the clothespin for 1 minute and record # of squeezes
What is the total number of squeezes in 1 minute
15
Which two body systems work together to remove wastes produced by exercising from cells?
Circulatory and Digestive
Immune and Endocrine
Digestive and Skeletal
Respiratory and Circulatory
16
The scientific method is...
all of the above
a way to test your hypothesis
a way to troubleshoot and problem solve
a tool scientists use to understand the world
17
In order for muscle fatigue to end, the muscle cells must be provided with
Carbon Dioxide
Nitrogen
Amino Acids
Oxygen
18
The buildup of waste products in muscle cells that are active might cause
Digestion
Increased fatigue
Decreased heart rate
Cellular respiration
19
CER means ?
Clean Even Responsible
Claim Evan Reasoning
Claim Evidence Reasoning
Claim Evidence Romya
20
Which is an independent variable?
the cause
the effect
21
What is the dependent variable?
Per
Week
Pounds
1
22
What is the dependent variable?
Month (m)
Hours (h)
Day of week (w) - horizontal axix
Temperature (C) Vertical axis
