Vocabulary
Motion is the ___________ & _____________ of an object
direction & speed
What is force?
push and pull
True
What energy transformation occur in an electric pencil sharpener? Label the transformations with arrows
electrical energy > mechanical energy
A _____________ is something that remains the same throughout the entire experiment
constant
Thermal energy is...
heat or energy from moving molecules in a material; responsible for the temperature of the material
When an object is in motion it has ____________ energy.
kinetic
When energy changes from one form to another, this is called an energy _____________.
transformation
Boiling water from a pot on the stove is an example of an energy _____________.
transfer
What is a dependent variable?
Something that depends on the independent variable; considered to change or "depend" on the manipulation of another variable called the independent variable
Electrical energy is...
energy from the flow of tiny particles in a material
An opposing motion can also be defined as...
friction
What are the three main non-renewable energy sources that we use today?
coal, petroleum oil, natural gas
What energy transformations occur when you use a hand crank flashlight? Label transformations with an arrow
mechanical energy > electrical energy > radiant energy
What is an independent variable?
Something I change in an experiment
Mechanical energy is...
energy that an object has because of its motion and its position; potential energy + kinetic energy
Net force is...
the combination of all the forces acting on an object
What are renewable energy sources?
Solar power (sun), Hydropower (water), wind, and trees
*bonus for students who got the tree answer!*
An elevator is an example of transforming electrical energy into _____________.
mechanical
Renewable energy is beneficial because...
(select all that apply)
A. It releases carbon dioxide
B. It does not create pollution
C. It is a finite (limited) resource
D. It can be replaced naturally
B. & D.
Radiant energy is...
energy from the electromagnetic spectrum or electromagnetic waves (ex: radio waves), which includes visible light
Draw net forces on a moving car
Students should have a car in the middle of their boards - with arrows for gravitational force (pointing down), force from the ground (pointing up), friction or drag (pointing behind the car), and a push or pull force from the engine (pointing in front of the car)
Radiant energy is EXACTLY the same as saying light energy (T/F)
False! Radiant energy INCLUDES light, but is not ONLY light energy. It is all energy on the electromagnetic spectrum (UV Rays, radio waves, etc.)
When Mr. Keber shoots the basketball, there is a transfer of __________ energy from Mr. Keber to the ball.
kinetic
Miss Sam's bag weighs 20g, Ms. DiGrazia's bag weighs 50g, and Mrs. Burkhart's bag weighs 30g. Who will need more force to move their bag?
Ms. DiGrazia