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WorksheetsSC 7 N 1 2
Total questions: 15
Worksheet time: 15mins
What is a factor, usually being measured or observed, that responds to, or depends on, another factor.
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
What is the variable manipulated by the experimenter in order to study changes in the outcome variable?
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
We tested the effect of water temperature on how fast a sugar cube dissolves. What was the independent variable?
Time to Dissolve
Amount of Water
Water Temperature
Beaker Size
We tested the effect of water temperature on how fast a sugar cube dissolves. What was NOT a controlled variable?
Size of Sugar Cube
Temperature of Water
Size of Beaker
Amount of Water
What are making multiple sets (trials) of measurements or observations in a scientific investigation.
Repetition
Replication
What is a statement that can be tested scientifically through experiments and/or other scientific investigations.
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
Why did each group test the amount of drops of water a penny could hold before changing their variable?
It provides more data to include in a lab report
It ensures that the hypothesis will be correct
It adds an independent variable to the experiment.
It is the control and serves as the basis for comparison
How many variables should be changed in an experiment?
ONE
TWENTY
THREE
TEN
Group 1 found food coloring affects the amount of drops a penny holds. Group 2 found that food coloring does not. What should they do?
Ignore Group 2
Conduct it again with quarters
They should repeat the experiment again and compare results
Conclude that food coloring has no effect
What is empirical evidence?
Evidence that comes from scientific testing.
Evidence that you think but has never been tested.
Pure water is neutral. If water is neither an acid nor a base, what is the pH of water?
0
7
10
Which best describes the relationship between temperature and dissolved oxygen in a lake?
As temperature increases, dissolved oxygen increases.
As temperature increases, dissolved oxygen decreases.
As temperature decreases, dissolved oxygen decreases.
A change in temperature has no effect on dissolved oxygen.
What is the primary gas responsible for the greenhouse effect on Earth?
A) Oxygen
B) Nitrogen
C) Carbon Dioxide
D) Hydrogen
Which of the following is a chemical change?
A) Melting of ice
B) Boiling of water
C) Rusting of iron
D) Breaking of glass
What is the process by which plants make their own food using sunlight?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation
