7th Grade Science
What causes an earthquake?
Plate tectonics (slowing down and causing friction..)
According to Newton’s First Law, an object at rest will stay at rest unless acted upon by what?
An unbalanced force.
Which layer of the atmosphere is closest to Earth and contains all of our weather?
Troposphere
This organelle is known as the "brain" of the cell because it contains genetic material (DNA).
Nucleus
In an experiment, this is the variable that the scientist purposefully changes.
Independent Variable
Which planet has the most moons?
Jupiter
Which of Newton's Laws explains that for every action, there is an equal and opposite reaction?
Newton’s Third Law
What is a biologist’s favorite piece of clothing?
Genes (Jeans)
Which organelle is responsible for producing energy through cellular respiration?
Mitochondria
This type of heat transfer occurs through direct contact, like a spoon getting hot in a cup of cocoa.
Conduction
When liquid water is in a solid form what is it?
ice
If you increase the mass of an object but want to keep the acceleration the same, what must you do to the force?
Increase the force (F = ma).
This process occurs when water vapor cools down and turns back into liquid water, forming clouds.
Condensation
Found only in plant cells, this organelle captures sunlight to make food through photosynthesis.
Chloroplast
Is "The plant grew 3 inches" a qualitative or quantitative observation?
Quantitative
What would you consider the sun?
Star
This force pulls all objects with mass toward one another and keeps our planets in orbit.
Gravity
What is the primary source of energy that drives the water cycle and moves energy through the atmosphere?
Sun
What did the limestone say to the geologist?
Don’t take me for granite!
This is the process by which liquid water changes into a gas.
Evaporation
Why can you never trust an atom?
Because they make up everything!
A book sitting on a table has forces acting on it, yet it doesn't move. What is the net force on the book?
Zero (the forces are balanced).
Air tends to move from areas of _____ pressure to areas of _____ pressure.
High to Low
This body system is responsible for transporting oxygen and nutrients to cells via the blood.
The Circulatory System.
Warm air rising and cool air sinking is an example of what type of heat transfer?
Convection
What is it called when water turns to gas?
Evaporation
This is the tendency of an object to resist a change in its motion.
Inertia
This term describes the short-term state of the atmosphere, while "climate" describes long-term patterns.
Weather
Which system works with the skeletal system to allow the body to move?
The Muscular System.
Why was the mushroom always invited to the science parties
Because he was a "fun-gi" (fungi)!
What's the powerhouse of a cell?
Mitochondria
On a distance-time graph, a horizontal straight line indicates that the object is doing what?
Standing still (not moving).
Why did the tectonic plates break up?
It wasn't anyone's fault—they just needed some space.
This "gatekeeper" of the cell controls what enters and exits.
Cell Membrane
What do we call a possible, testable explanation for a scientific observation?
Hypothesis