Nature of Science
Life Science
Earth Science
Space Science
Physical Science
100
What is the difference between a prediction and a hypothesis?
A hypothesis is a prediction or educated guess that is a possible answer to a scientific question that can be tested to find out if it is true or not.
A prediction is just a statement of what you think will happen next (not tested)
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, or natural satellite
100
A melting ice cube is an example of what kind of change in matter?
Physical
200
The ________ variable is the factor that is being TESTED by the scientist during an experiment that causes the measurable changes in the _________ variable (the effect)
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 is actually the brightest?
Blue
200
What do we call the measurement 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 knowledge based on observations that have been repeatedly tested and shown to be true over time. Laws do not explain or tell why something is the way it is, they simply describe a pattern in nature; however, Theories attempt to explain how or why something functions the way it does. Both are subject to change if new discoveries/technologies are made.
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
The law of conservation of energy states that energy cannot be created or destroyed, meaning that the total amount of energy is the universe is constantly the same, even though it may have been transformed into a different type.
What to we call the energy that can no longer be used to do work, such as heat energy that leaves a system and enters the atmosphere?
Waste energy