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WorksheetsSC 6 N 1 2
Total questions: 15
Worksheet time: 15mins
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
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
What are making multiple sets (trials) of measurements or observations in a scientific investigation.
Repetition
Replication
What is the variable manipulated by the experimenter in order to study changes in the outcome variable?
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
What is a statement that can be tested scientifically through experiments and/or other scientific investigations.
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
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.
If a large amount of fertilizer enters a lake, which will most likelyhappen?
The fish population in the lake will increase.
The temperature of the lake water will increase.
The number of fish dying in the lake will increase.
he available food supply for the fish in the lake will increase.
What does pH measure?
acidity/alkalinity
dissolved oxygen
nutrient level
turbidity
Which would be the most likely cause of large numbers of fish dying in a stream?
a lack of nitrogen
high levels of mercury
decreased carbon dioxide
low dissolved oxygen concentration
Which best explains why the turbidity increases as water samples are taken closer to the shore?
Shoreline erosion causes sediment to wash into the lake.
Sediment is carried from the middle of the lake to the shore by wind.
Swimmers stir up sediment by splashing in the water near the shore.
Fish stir up sediment while feeding on plants that grow close to the shore.
SC 6 N 1 2
Repetition
Replication
Observation
Inference
SC 6 N 1 2
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
SC 6 N 1 2
Independent Variable
Dependent Variable
Controlled Variable
Hypothesis
