Vocabulary
What is the purpose of a model?
to help us understand something by making it simpler or easier to see
What is kinetic energy?
energy an object has because it is moving
Where do people get their energy?
food
What is the first step of the scientific method?
observation/question
What is a system?
a set of interacting parts forming a complex whole
What is potential energy?
the energy that is stored in an object or system
Ms. Deiters gets in the car one morning and drives to Starbucks. Did her car create energy?
No, her car got energy from the gasoline
A scientific journal or publication is what step of the scientific method?
report conclusions
What is the difference between transferring and converting?
transferring is to move something from one place to another, converting is changing from one type to another
Leo jumps from the couch to the table, knocking over a glass and turning on the tv by landing on the remote. What kind of energy do each of these objects have: Leo, the glass, and the TV.
Leo, the glass, and the TV all have kinetic energy
Why was a hand crank generator the better choice for the rescue workers instead of the solar panel?
The rescue workers may have to do a rescue mission in a building, at night, or other times when the sun is not shining
A hypothesis is a....
educated guess
Mr. Self throws a football to Ms. Deiters. What evidence do you have that the football has energy?
the football moved. Anything that moves or changes has energy.
Pizza has potential energy. How can you prove that it has potential energy?
Someone would have to eat it. Once a person eats food, they have energy.
Leo calls his friend on his cell phone, then charges it on a portable charger. He then eats some food and goes to the beach. Which two objects in this story have potential energy?
portable charger and food
Hernandez thinks that cats get their energy from chicken, but Palmer thinks they get their energy from turkey. How could they test this with an experiment?
They could offer a cat chicken one day and turkey another, and see which day the cat has the most energy.
A flashlight gives off what kind of energy?
Light energy
A generator changes which type of energy to which type of energy?
kinetic energy to electrical energy
How could energy get from the sun to power a flashlight?
create an energy transfer diagram
many examples work but:
sun -> solar panel -> battery -> flashlight
Leo was wondering why his cat food tastes so good. He decides to eat two types: one with chicken and one without chicken, to see which one tastes better. What step of the scientific experiment is this?
test with experiment