Nature of Science
Earth Science
Space Science
Life Science
Physical Science
100
The variable manipulated by the experimenter in order to study changes in the outcome variable.
What is an independent variable?
100
Twice a month, the Sun and Moon come into rough alignment. High tides are especially high, and low tides are especially low.
What is a Spring Tide?
100
These two events occur in the outer layer of the Sun's atmosphere.
What are prominences and solar flares?
100
The organelle of a plant cell which serves as the plant cell's skeletal structure.
What is the cell wall?
100
The state of matter in which particles are tightly bound together, though still vibrating.
What is a solid?
200
An explanation for some naturally occurring event developed from extensive observations, experimentation, and reasoning.
What is a scientific theory?
200
The process by which liquid water becomes water vapor and enters the Earth's atmosphere.
What is evaporation?
200
A star that has a high absolute magnitude and a low temperature.
What is a red giant?
200
A symbiotic relationship in which one organism benefits, and the other is unaffected.
What is commensalism?
200
The smallest unit of an element is called a(n) __________, and consist of these three particles.
What is an atom, proton, neutron and electron?
300
Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. What is the outcome variable (dependent variable) in this experiment?
The number of bubbles produced.
300
In plate tectonics, the type of boundary at which volcanoes commonly form.
What is a convergent boundary?
300
During winter, the Earth's axis is most likely to be in this position.
What is tilted away from the Sun?
300
The two products of photosynthesis.
What are glucose and oxygen?
300
A substance with a pH balance of 3 is considered this.
What is acidic?
400
A factor or condition in a scientific experiment that is purposefully kept the same.
What is a controlled variable?
400
The chemical process by which humans typically introduce carbon into the atmosphere.
What is combustion?
400
When the Moon is on the opposite side of the Earth from the Sun, its phase can be described as this.
What is a full moon?
400
The process by which different human body systems work together to maintain a stable internal environment?
What is homeostasis?
400
The difference between a chemical change and a physical change is that in a chemical change, this is produced.
What is a new substance?
500
A statement that can be tested scientifically through experiments and/or other scientific investigations.
What is a hypothesis?
500
The processes by which igneous rocks are broken down into sediments, which become sedimentary rock.
What are weathering and erosion?
500
The three methods by which heat is transferred in the Earth's atmosphere.
What are Radiation, Convection, and Conduction?
500
The theory which suggests that organisms change over time as a result of genetic variation which create survival advantages for certain organisms.
What is evolution by natural selection?
500
The color of visible light with the highest frequency and shortest wavelength.
What is purple or violet light?
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