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

What is a hypothesis?

A prediction or educated guess that is a possible answer to a scientific question.

100
When is an species considered to be extinct?
When every single member of the species dies and is gone from Earth.
100
Name 2 renewable resources.
wind, sunlight, water, trees, soil, etc.
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 or lava?
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
300
If two of Earth's tectonic plates collided, what would occur?
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?
It's mass.
400

How many protons does one atom of Iron have? Electrons? Neutrons?
26 protons
26 electrons
30 neutrons
500
What is the 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. Laws are theories that have consistently been true over long periods of time and describe a pattern in nature.
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
On the day of the Vernal Equinox, how does the amount of sunlight compare in the Northern and Southern Hemispheres? What about the Summer Solstice?
Equinox- both hemispheres get same amount of sunlight (~12 hours)
Solstice- Northern gets more sunlight and Southern has longer darkness
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
Over time, the amount of energy unavailable to do work in the universe increases. What do we call this?
Entropy