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Cells
Energy
Motion and Forces
Simple Machines
Random
100
About how many cells make up the average human body
120 trillion
100
What are the two forms that all energy must come in?
Potential and Kinetic
100
How many laws are named after Newton? What is one of them.
3 total laws
100
Name at least 4 of the 6 simple machines.
Wedges, incline plane, wheel and axle, screw, lever, and pulley
100
What is the force that determines our weight on any planet?
Gravity!
200
What are cells organized into? What are organs organized into?
Tissues and organ systems
200
What is energy?
The ability to cause change in an object either by position or movement of the object's particles.
200
What is inertia?
The tendency to do nothing or to remain unchanged. How hard it is to overcome what an object is doing.
200
What is the purpose of a simple machine?
To make work easier! To require less force
200
What is the electromagnetic spectrum?
A range of waves based on their strength
300
What is the town hall of the cell? What does it do that makes it the town hall?
It is the control center of the cell and tells other structures in the cell how to function. It also contains the cell's DNA.
300
Give an example of energy transformation from chemical energy to mechanical energy.
Gasoline being used to run a car.
300
What two things are required for work to be done?
Force must be applied and movement must occur.
300
Describe what a pulley is and how it works.
A rope wrapped around a wheel that can raise and lower heavy objects
300
What is the difference between conductors and insulators?
Conductors allow electricity to travel through it, insulators prevent it.
400
Name 2 other important cell organelles and explain their function.
Answers will vary.
400
How is the sand in a hour glass like the amount of energy in the universe?
The total amount always stays the same, but it can change form and position.
400
What kind of force is created when two surfaces are pushed together?
Friction
400
What is a compound machine? Give one example.
A machine that is made up of at least 2 or more simple machines.
400
What are the two main types of waves? Describe one of them
Mechanical and transversal. Mechanical waves travel through matter and transversal don not require it.