Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Major Unit 1 Test > Flashcards

Major Unit 1 Test Flashcards

1
Q

Hypothesis

A

A hypothesis is a possible explanation for a set of observations or a possible answer to a scientific question.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Scientific Procedure

A

The process of the scientific method involves making hypotheses and includes the step-by-step directions for an experiment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Controlled Experiment

A

A controlled experiment is an experiment in which only one variable is changed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Independent Variable (IV)

A

The IV is the variable that the scientist changes or manipulates. An easy way to remember the IV is the “I change” this variable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Dependent Variable (DV)

A

The DV is the variable that is observed and that changes in response to the IV. An easy way to remember the DV is that it’s the results that you’re measuring.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In the fertilizer/algae scenario what would the IV and DV be?

A

The IV would be the amount of fertilizer that is added to the pond.

The DV would be the amount of algae that grows.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In an experiment where we test the number of hours of sleep a student gets versus their test score what would the IV and DV be?

A

The IV would be the number of hours of sleep. This is the variable we can change. IV = “I change this variable.”

The DV is the test scores. This is the variable that changes in response to IV or sleep hours in this experiment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Control Group

A

The group in an experiment that does not receive any treatment and is used as a benchmark to measure how the other tested subjects do.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Qualitative data

A

Qualitative (i.e. Quality) data is descriptive and involves characteristics that can’t be measured. For example, in the fertilizer/algae scenario, qualitative data would be the color of the algae.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Quantitative data

A

Quantitative (i.e. Quantity) data can be counted, measured, and expressed using numbers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Controlled Variables / Constants

A

These are factors that are kept the same for all groups.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In the fertilizer/algae scenario what would the controlled variables or constants be?

A

In the algae/fertilizer example we’ve been using in class, constants would be the size of the tanks the water is kept in, the source of the water, the amount of light, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Experimental Variable

A

This is the condition that is changed for the experimental group.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

In the fertilizer/algae scenario what would the experimental variable be?

A

For example, in the algae/fertilizer example, the experimental variable is the fertilizer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Scientific Conclusion

A

Your conclusion summarize how your results support or contradict your original hypothesis and includes key facts or data.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A scientist wants to see if a new fertilizer has an effect on plants. What would the control group be?

A

These would be plants that don’t get the new fertilizer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A scientist conducted an experiment to determine how water temperature affected the rate at which fish breathe. Come up with an example hypothesis?

A

Multiple answers:
The higher the water temperature the faster fish breath.
The higher the water temperature the slower fish breath.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A scientist conducted an experiment to determine how water temperature affected the rate at which fish breathe. What are the Independent, Dependent and Controlled Variables?

A

Independent Variable (IV) = water temperature

Dependent Variable (DV) = rate of fish breathing by counting number of times fish opened mouths.

Controlled or Constants = all same species of fish, same tank of water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

On a graph which axis measures the independent variable and which axis the dependent variable?

A

X (horizontal) always the IV (thing you change)

Y (vertical) always the DV (thing you measure)

20
Q

On a graph what does TAILS stand for?

A 
Title
Axis Labels
Interval Marks
Label of Units
Scale
21
Q

Key point about TITLE of a graph?

A

Includes what the graph is about and both the manipulated (IV) and responding (DV) variables.

22
Q

Key point about AXIS LABELS of a graph?

A

IV is always on the X axis and the DV is always on the Y axis.

23
Q

Key point about INTERVAL MARKS of a graph?

A

Consistent spacing and always start at zero

24
Q

Key point about UNIT LABELS of a graph?

A

After the axis label, include the proper units in parenthesis. For example (hours) or (feet) etc.

25
Q

Key point about SCALE of a graph?

A

Always go by an even scale. Ex. 1,2,3,4 not 1,4,5,6

26
Q

Why is it important to have controlled factors when testing our independent variable in an experiment?

A

All the controlled factors are kept the same so we know that any change in the DV happened only because of the change we made to the IV. If we changed multiple variables, we wouldn’t know which variable caused the change in the DV.

27
Q

Example hypothesis formula:

A 
If the \_\_\_\_\_\_\_\_\_ is \_\_\_\_\_\_\_\_\_\_ ,
(independent variable) (Increased/decreased)
then the \_\_\_\_\_\_\_\_ will \_\_\_\_\_\_\_\_\_\_
(dependent variable) (increase/decrease)
because \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.
28
Q

Will an egg float higher in water with more salt?

What is the IV?
What is the DV?
On a graph what would the X / Y Axis labels be?

A

IV: Amount of Salt (IV = I Change…)

DV: Measurement of how high egg floats (DV=results you measure)

X (horizontal) = Amount of salt added (IV)
Y (vertical) - Measurement of how high egg floated (DV)

29
Q 
Ivan and Braxton want to know if a stretching a rubber band at different lengths affects how far the rubber band will fly. They will use centimeters for all measurements.
Write a hypothesis:
What is the IV:
What is the DV:
What is the Constant:
A

Hypothesis example: If the rubber band is stretched longer then the distance it flies will be farther.

IV: Length of stretching the rubber band in cm.
DV: Distance the rubber band flew in cm.
Constant: The size and type of rubber band.

30
Q

Will a plant grow higher with more light?
What is the IV:
What is the DV:

A 
IV = amount of light shown to plants
DV = measurement of how high the plants grow
31
Q

Common Metric Units

Unit of length is …

A

meter

32
Q

Common Metric Units

Unit of mass is …

A

gram

33
Q

Common Metric Units

Unit of volume is …

A

liter

34
Q

Common Metric Units

temperature scale is …

A

Celcius

35
Q

Kilo- means …

A

1000 times the base unit

36
Q

Cent- means …

A

1/100th of the base unit

37
Q

Milli- means …

A

1/1000 of the base unit

38
Q

1 kilometer = _____________ meters

A

1000 meters

39
Q

1 milliliter = _____________ liters

A

0.001 liters

40
Q

1 gram = _____________ milligrams

A

1000 milligrams

41
Q

0.45 liters = _____________ milliliters

A

450 milliliters

42
Q

5000 milligrams = _____________ grams

A

5 grams

43
Q

1300 meters = _____________ kilometers

A

1.3 kilometers

44
Q

2500 milliliters = _____________ liters

A

2.5 liters

45
Q

0.017 grams = _____________ milligrams

A

17 milligrams

Biology (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions