Thermal Energy
Energy Transfers
Simple Machines
Energy Transfer Examples
Random
100
Thermal means
HEAT!
100
This is the energy of MOTION, and it is kinetic!
Mechanical
100
This simple machine helps us use less force, with a pointed edge, by helping us push things apart. Give an example.
Wedge Axe, knife
100
An oven is baking bread is an example of ________.
Thermal energy transfer
100
Which of the following substances is an element (list all of them)? HCl K He Ca
K-potassium He-helium Ca-Calcium
200
When particles (matter) are heated, they move ___________.
faster
200
This is the ACRONYM used to help us remember all the different types of ENERGY TRANSFERS.
MRS. CENT
200
What is a conductor?
Something that allows heat and electricity to move easily through them.
200
A light bulb that is lit in your closet is an example of ________ energy transferring into ___________ energy.
electrical to light
200
An example of this energy transfer is when we eat food. It is composed of stored energy in chemical compounds.
Chemical (stored energy)
300
This thermal ENERGY transfer occurs when heat rises and cold sinks, causing a circular motion.
Convection
300
An microwave receives electricity to heat food. What is the SOURCE of the microwave's energy? Is it potential or kinetic?
Electricity Kinetic
300
One group is pulling a rope to the left, with a force of 350 N. The other group is pulling to the right with a force of 400 N. What direction will the rope move? What is the net force?
Right-greater force 50 N (400-350=50N)
300
A flashlight is an example of __________ energy turning into _______________ energy.
chemical energy (battery) into light energy
300
Heatwaves from a fire, or from the sun, are both examples of ______________________.
Radiation/Radiant energy
400
This heat energy transfer occurs when something touches a heat source.
Conduction
400
This energy transfers involved waves moving through solids, liquids, or gases. It allows us to hear things. Examples include whale calls, bats echo-locating, a train moving across tracks.
Sound
400
Simple machines help us do work by _____________ the amount of ___________ to move an object.
decreasing, force
400
A basketball being dribbled is an example of _________ energy turning into ____________ energy.
chemical (food) into mechanical (moving)
400
An object falls off of a desk. This means the object was ________________ in order to move.
unbalanced
500
__________ is a thermal energy transfer that we receive through waves from _______ energy from the sun, or another heat source.
Radiation radiant/light
500
List the 7 different types of energy transfers. Beside them, tell me if they are potential or kinetic energy.
Mechanical-Kinetic and potential Radiant/light-kinetic Sound-kinetic Chemical-potential Electrical-kinetic Nuclear-potential Thermal/heat-kinetic
500
What two simple machines are in a wheel barrow?
Lever (handle to lift) Wheel and axle (wheel)
500
What are the 3 different energy transfers in this situation? A lamp is turned on for me to read a book. However, I have to move away because the lamp gets so hot.
electrical, light/radiant, heat/thermal electrical turns into light/radiant, which turns into thermal
500
Inertia means an object in motion stays in motion, or an object at rest stays at rest. This is also called ___________________ of Motion.
Newton's First Law
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