Types of Energy
Simple Machines
Variables
Heat Transfer
Electrical Circuits and Transformation
100
What is kinetic energy?
The energy that is in motion.
100
How does a lever work?
Applying forces at different distances from the fulcrum, or a pivot.
100
the only variables are independent and dependent
True or False?
False
100
Hot coffee is stirred with a spoon; the spoon gets hot due to
conduction
100
What type of circuit is this?
Open circuit
200
What is potential energy?
The energy that is stored and is not in motion.
200
What type of simple machine is a ramp?
Inclined plane
200
Jeric wants to know the effect of studying 10 minutes extra each day on her Math. What is the independent variable?
Studying 10 extra minutes.
200
Connor layed on the same hot rock at night and kept warm from the rock by
conduction
200
What type of circuit is this?
Closed circuit
300
Where does mechanical energy come from?
Potential and kinetic energy and turning it into power.
300
How do simple machines help humans?
Reduces their effort.
300
What you measure in an experiment.
Dependent variable
300
Near the ceiling of a room, the air is warmer. The warm air rises because of ________.
convection
300
What is the energy source in a circuit?
Battery
400
What is chemical energy?
Chemical energy is the energy stored in chemical bonds, it is a form of potential energy.
400
What is not a type of simple machine.
A: lever
B: wedge
C: pully
D: spring
D: Spring
400
Connor wants to determine the effect of fertilizer on the growth of grass. What is the dependent variable?
Growth of grass
400
Lane wanted to see what would happen if they put a piece of bread outside vs inside a dark space they did it and the one outside molded very fast vs the one in a dark space why?
radiation
400
What is a circuit?
the complete circular path that electricity flows through
500
What type of energy does the SUN give?
Solar Energy
500
Name at least three simple machines.
Lever
Wheel and axel
pully
inclined plane
wedge
screw
500
What are ALL the scientific variables?
Independent, dependent, and controlled.
500
What does insulation do?
Insulation reduces heat transfer.
500
What do you need to make a circuit?
An energy source – like a battery or mains power. An energy receiver – like a lightbulb. An energy pathway – like a wire.