Nature of Science
Life Science
Earth Science
Space Science
Physical Science
100

What is a hypothesis?

A prediction that is a possible answer to a scientific question based on past knowledge, inferences, and observations.

100
When is an species considered to be extinct?
When every single member of the species dies and is gone from Earth.
100

Explain how a delta forms.

deposition via flowing water - river to ocean

100
What do you call a natural object that orbits a planet?
A moon.
100
A melting ice cube is an example of what kind of change in matter?
Physical
200
The ________ variable is the factor that is changed during an experiment in order to study the changes in the _________ variable.
independent, dependent
200
What form of cellular reproduction creates gametes (reproductive cells)?
Meiosis
200

What kind of rock forms directly from cooling magma?

Intrusive Igneous Rock

200
You see 3 stars, one blue, one white and one red. All 3 stars are the same size and distance from earth. Which star will be the brightest?
Blue
200
What is measure of the pull of gravity on an object?
Weight
300
What are models in science? Give one example of a scientific model.
Representations of something that shows its parts or how it functions. Examples include... diagrams, 3D models, graphs, equations, etc
300

Give one example of how scientists study evolution.

fossil record, comparing similar species, comparing similar features on different species, watching evolution occur in populations of organisms

300

If two of Earth's tectonic plates collided, what could occur or be created?

Earthquakes, create mountains or volcanos

300
What shape is the orbit of the planets around the sun?
elliptical
300
If you put a hot pot into a sink of cold water, what would be the primary way the heat would transfer from the pot to the water?
Conduction
400
A scientist performs an experiment and asks other scientists around the world to replicate it. Why would other scientists most likely try to perform the same experiment?
To ensure that the results of the experiment are accurate and can be replicated every time the experiment is performed.
400
What are 2 structures that plant cells have that animal cells do not?
Chloroplasts and Cell Walls
400
Name 2 ways humans have caused negative changes in the environment.
pollution, climate change, erosion, habitat destruction, deforestation, desertification, species extinctions, etc.
400

What is the most important thing in determining a star's life cycle?

Its mass.

400

How many protons does one atom of Iron have? Electrons? Neutrons?
26 protons
26 electrons
30 neutrons
500

What is a similarity and a difference between a Scientific Law and a Scientific Theory?

Both are scientific explanations about related observations that have been repeatedly tested and shown to be true over time. Theories explain how or why an event occurs, while law simply state what will happen (usually in a mathematical equation).

500
A bird species feeds on the seeds of a particular tree. A long drought causes the outer covering of the seeds to become thicker and harder to crack. After many generations, what will be the most likely change on the birds in this population?
They would adapt to eating the thicker seeds by evolving thicker, bigger or stronger beaks.
500

What kind of weather does a cold front bring? What would the weather be like AFTER the cold front has passed?

stormy, rainy, windy, cool

after, it tends to be clear but cold

500
What phase is the moon in when it is closest to the sun? What about when it is farthest?

What are the names of the eclipses that can happen when the moon is in these two phases? (You must match them with the correct phase)
Closest- New Moon, Solar Eclipse
Farthest- Full Moon, Lunar Eclipse
500

A solution is created by dissolving salt into water. Identify the type of mixture, and what the solvent and solute are.

homogenous mixture; solvent - water; solute - salt

M
e
n
u