Variables
What is a control variable?
A variable used to keep the experiment fair.
The first thing a scientist does when beginning an investigation is?
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This word often begins a scientific hypothesis: “_ plants receive more light, then they will grow taller.”
The word is if
What is data?
Facts, measurements, and results collected during an investigation
What is an experiment?
An investigation designed to test a hypothesis
What is an independent variable?
A variable that the scientist changes in the experiment.
What is a testable explanation or prediction for what may happen in an experiment?
A hypothesis
What is the word at end of the hypothesis that predicts the outcome should come after if?
Then
What is quantitative data?
Information described with numbers, such as “the plant grew 4 cm”
What is the control group?
The group in an experiment that does not receive the treatment being tested
What is the dependent variable?
The factor measured or observed as the result of a change
What is the step in which a scientist carries out a planned test?
The experiment
A good hypothesis must be able to be checked through this.
An experiment
What is qualitative data?
Information described with words using your 5 senses, such as “the liquid turned cloudy”
What are the results or data?
Repeating an experiment several times increases the reliability of these
In a plant-growth test, the amount of sunlight is changed while height is measured. The sunlight is this type of variable
What is the independent variable?
What is the step where scientists look for patterns and decide what their results mean?
Analyzing data
True or False: The project is not good and needs to be discarded if your hypothesis was not correct.
False
What is an observation?
Using your senses or tools to notice and record what happens
What is the reason that we use only 1 independent variable?
Because changing more than one factor at a time makes the results difficult to identify
In that same test, soil type, pot size, and amount of water should be these.
What are constants or controlled variables?
What is the final step in which scientists tell others what they learned?
A conclusion
How does a scientist report if a hypothesis is not supported by evidence?
That the hypothesis is rejected.
How are patterns or trends represented in data?
A graph or a table
What is safe and ethical science?
Scientists should use safety goggles, follow directions, and report results honestly because these practices support this kind of science