riddles
I am the basic unit of life.
All living things are made of me.
What am I?
Cell/ Cell theory
A student sees a plant leaning toward a window.
They say: “The plant is growing toward the sunlight.”
observation or inference?
inference
A roller coaster at the top of a hill has a lot of me stored.
Potential energy
Earth’s crust moves because of me. I make the tectonic plates move.
Convection currents in the mantle
I am an educated guess that can be tested.
hypothesis
Heat and pressure can change me.
I used to be another type of rock.
What am I?
metamorphic rock
I am something you directly see or measure (you use your five senses). I am not an opinion or guess.
What am I?
Observation
I show complex, multiple feeding relationships in an ecosystem.
Food webs
I describe long-term patterns over many years.
I’m not today’s forecast.
climate
I am the one thing a scientist changes on purpose in an experiment.
What am I?
Independent variable
Organisms with helpful traits survive and reproduce more often.
What process am I?
Natural Selection
The law stating that all objects in the universe attract one another.
Universal Law of gravitation
why does Earth experiences seasons?
The earths tilt on its axis as it revolves around the sun
I trap heat in Earth’s atmosphere.
Too much of me contributes to global warming.
Green House Effect
I do NOT receive the experimental treatment (Independent variable).
I help scientists compare results.
Control group
I help organisms grow and repair damage.
One cell divides into two identical cells.
What am I?
Mitosis
A student tests if music affects studying performance.
What should be measured?
What should stay constant?
Dependent: test score or recall
Constants: time studying, material, environment
“Explains how life evolved from earlier species over time.”
Theory of evolution
Fossils provide evidence of organisms from long ago. They are most often found in
sedimentary rocks
Scientists must evaluate scientists work. This process is called
Peer review
This is a well-tested explanation for natural phenomena that can change when new evidence is discovered. Give me 2 examples as well
Scientific Theory
A student wants to test if fertilizer helps plants grow faster.
What is the independent variable?
What is the dependent variable?
What is the control group?
Independent: amount of fertilizer
Dependent: plant growth/height
Control: no fertilizer group
1)“matter cannot be created or destroyed in a closed system. The total mass of substances remains the same during a chemical reaction.” What am I?
2)"energy cannot be created or destroyed, only transformed from one form to another. Within a closed system, the total amount remains constant." What am I?
1)Law of Conservation of Mass
2)Law of conservation of Energy
This force caused gas and dust to pull together to form stars, planets, and solar systems. It also keeps objects in orbit around one another
gravity
I am a simplified representation of something too big, small, or complex to see easily.
What am I? Give 1 example
model