Measures Length
Ruler or Metric Ruler
What body system includes blood and blood vessels?
The circulatory system
This is an educated guess or testable prediction about the outcome of an experiment, often written as an "If... then..." statement.
Hypothesis
When a liquid is changed to a solid it is called?
Freezing
Name the two gases we breathe in and out.
O2 (oxygen) and CO2 (carbon dioxide)
Measures Mass
Triple Beam Balance

Which body system is shown in the picture?
Digestive system
In an experiment, this is the single factor that the scientist intentionally changes or manipulates.
Independent Variable or IV
When a solid changes to a liquid it is called?
Melting
What is the third planet from the sun?
Earth
Holding & Storing Liquids: Its wide opening makes it great for holding liquids during an experiment or keeping solutions handy at your lab station.
Beaker
What body system is shown in the picture?
Nervous system
This is the variable that is measured or observed to see how it responds to changes made during the experiment.
Dependent Variable
When a liquid changes to a gas it is called?
Evaporation
Seeing dark clouds in the sky is an observation, but concluding or stating that "it is definitely going to rain soon" based on those clouds is known as this.
Inference
Spring Scale
What body system helps us to breathe in oxygen and breathe out carbon dioxide?
Respiratory System
This group in an experiment does not receive the experimental treatment and is used as a standard comparison for the results.
Control Group
When gas changes to a liquid it is called?
Condensation
Process where plants make their food.
Photosynthesis
A tall, narrow glass or plastic tube with a flat base used to make exact, highly accurate measurements of liquid volume.
Graduated Cylinder
What body system is in the picture?

Skeletal system
Factors in an experiment that are intentionally kept exactly the same across all test groups to ensure a fair test are called these.
Constants (or Controlled Variables)
The path that all water follows as it moves around Earth in different states is called?
The water cycle
Sound waves need a what to travel through?
Medium