Vocabulary & Concepts
Which variable is changed on purpose by the scientist?
What is the independent variable?
In the experiment “Does sunlight affect plant growth?”, what is the independent variable?
Amount of sunlight.
How many millimeters are in 12 centimeters?
120 mm.
On which axis is the independent variable found?
The X-axis
What is a claim?
A setence that answers the testable question
Which variable is measured or observed in an experiment?
What is the dependent variable?
In the experiment “Does sunlight affect plant growth?”, what is the dependent variable?
Height of the plant.
How many grams are in 2.5 kilograms?
2,500 g.
On which axis is the dependent variable found?
Y-axis
What must scientists use to support their claims?
Evidence and reasoning
What is an educated guess or prediction of what will happen during an experiment?
What is a hypothesis?
In the experiment “Does sunlight affect plant growth?”, what is one constant?
Example: Type of plant, amount of water, or type of soil.
How many liters are in 750 milliliters?
0.75 L.
If a bar graph shows “Fertilizer Type” on the X-axis and “Plant Height” on the Y-axis, which variable is independent?
Fertilizer type is the independent variable.
What is “evidence” in science?
Data or observations that support a claim
We use constants and control groups to avoid experimental errors.
What is True?
In the experiment “Does music help improve test scores?”, what is the independent variable?
Listening to music or not.
How many kilometers are in 3,000 meters?
3 km
In the experiment, "How does exercise affect heart rate?", on which axis is heart rate?
The y-axis
What is “reasoning” in science?
Explaining why your evidence supports your claim.
What is a constant in an experiment?
Something that stays the same throughout the experiment.
In the experiment “Does music help improve test scores?”, what is the dependent variable?
Test scores.
What phrase helps you remember metric conversions?
King Henry Doesn’t Usually Drink Chocolate Milk
Where do you get the information to create a graph during an experiment?
From your data table
Why do scientists repeat experiments?
To check for accuracy and reliability.