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_______ are supported by observations and results from many investigations.
scientific theories
The variable that is changed in a controlled experiment is called the
independent variable
If the ramp is steeper, then the ball will roll faster. This statement is an example of a
hypothesis
If the results from your investigation do no support your hypothesis, what should you do?
modify your hypothesis
The amount of space an object takes up is called
volume
______ is a property that depends on the pull of gravity.
weight
Identify the independent variable in the following problem. Does the height from which a ball is dropped affect how high it bounces?
drop height
What does this tool measure?
mass
What is the SI unit for mass?
grams or kilograms
Which type of graph should be used to show the percentage of gases in Earth’s atmosphere?
circle graph
The amount of sunlight affects the health of a plant. What is the dependent variable in this statement?
health of the plant
Which tool would a scientist use to find the volume of a small amount of water?
graduated cylinder
What is an important safety rule to follow while conducting a scientific investigation?
wear goggles
List the steps of the scientific method in order.
state the problem, gather information, form a hypothesis, test the hypothesis, analyze data, draw conclusions
What is the density of an unknown metal that has a mass of 158 g and a volume 20 mL?
7.9 g/mL
Convert 4.5 m to cm? (1 m = 100 cm)
450 cm
