Nature
Earth/Space
Physical
Life
Random 1
Random 2
100
Data collected through scientific investigations such as observational studies or controlled experiments.
What is empirical evidence?
100
A collection of billions of stars found in the Universe.
What is a galaxy?
100
States that mass/matter cannot be created or destroyed, only transformed from one form to another.
What is the Law of Conservation of Mass/Matter?
100
This is the basic unit of life.
What is a cell?
100
The name of the solar system model showing the planets revolving around a central sun in concentric circles.
What is the heliocentric model?
100
This equation is used to calculate an object's density.
What is D=M/V?
200
This variable in an experiment is changed on purpose by the investigating scientist. It is also graphed on the X axis when data is analyzed.
What is the independent variable?
200
Predicted by the color of a star.
What is temperature?
200
The element with 54 protons in its nucleus.
What is xenon?
200
This is the organelle in which cellular respiration takes place.
What is the mitochondria?
200
Increasing this will increase the rate of a chemical reaction.
What is temperature?
200
This term used for describing moon phases means mostly full of light.
What is gibbous?
300
This variable in an experiment is measured by the investigating scientist. It is graphed on the Y axis when data is analyzed.
What is the dependent variable?
300
How bright a star appears from Earth's perspective based on the star's distance from the Earth.
What is apparent magnitude?
300
The process that occurs when a new substance is formed that has entirely new properties than what was started with.
What is a chemical change?
300
The process that breaks down food to provide cells energy and releases carbon dioxide.
What is cellular respiration?
300
The amount of light energy given off by a star.
What is absolute brightness (luminosity)?
300
During this lunar phase a lunar eclipse may occur.
What is full moon?
400
The materials that need to remain the same across all test groups in an experiment.
What are constants?
400
The picture below shows this event.
What is a solar eclipse?
400
Baking soda (NaHCO₃) is an example of this pure substance.
What is a compound?
400
This is the movement of Carbon throughout the planet.
What is the carbon cycle?
400
This states that the gravitational attraction between objects (such as in our Solar System) depends on their distances and their masses.
What is the Law of Universal Gravitation?
400
Fruit punch is an example of this type of mixture. 
What is a homogeneous mixture?
500
The group that does not receive the independent variable and is used as a base for comparison.
What is the control group?
500
The picture below shows this tidal event.
What is neap tide?
500
Pictured below is solid carbon dioxide. If this melts to a liquid, that is an example this type of change.
What is a physical change?
500
This process uses carbon dioxide, water and light to create glucose and oxygen.
What is photosynthesis?
500
This process uses oxygen and glucose to create carbon dioxide, energy, and water.
What is cellular respiration?
500
This is the reason that eclipses do not happen every month.
What is the moon's tilted orbit?