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Which is an example of potential energy?
BALL ROLLING DOWN RAMP
STRETCHED RUBBERBAND
BASKETBALL FLYING THROUGH AIR
When we built roller coasters in class, the marble had what kind of energy when it was rolling/in motion?
At what point in the image of the rollercoaster does the roller coaster have POTENTIAL ENERGY TRANSFORMING INTO KINETIC ENERGY?
What happens to the AMOUNT of PE/KE when an object has a higher position above the Earth AND/OR a higher mass?
Heat leaves a coffee cup as the currents of steam (liquid droplets) and hot gas rise. WHAT TYPE OF HEAT TRANSFER IS THIS?
Describe how light colored objects and dark colored objects are impacted by radiation/light.
Hint
Dark colors___________________ light energy/radiation
Light colors___________________ light energy/radiation
What does absorbed light/radiation do to the molecules that absorb the radiation?
HINT
When molecules absorb light energy/radiation they ___________________ and____________________________.
If energy cannot be created or destroyed, why does a toy spinning top, stop spinning? Where does the energy go?
Your hot cocoa cools off after 10 minutes. If energy cannot be created or destroyed, where does the heat energy go? Hint- The heat energy transfers from...
You boil water in an open pan until the pan is empty.
If matter is not created or destroyed, what happened to the water molecules in the pan?
In a class experiment, students melted ice in a closed system. They measured the amount before and after. This was their data they collected:
Mass of ice (solid) = 110 grams
Mass of melted ice (liquid)= 110 grams
What can the class conclude/claim from their investigation and their data?
Hint- What does the data show?
A- The volume changes during a phase change from solid to liquid.
B- The mass stays the same during a phase change from solid to liquid.
C- Heat caused ice to change from a solid to a liquid.
STRETCHED RUBBERBAND
KINETIC ENERGY (energy of motion)
POINT B
Energy is ability to do work (or ability to change, ability to move).
A higher position or greater mass will create more PE which transforms into more KE.
EX- What's going to hurt more... jumping off a chair or the roof?!?... A bowling ball or ping pong ball dropped on your foot?!?
CONDUCTION
CONVECTION
RADIATION
CONVECTION (Heat transfer through fluids (liquids or gas)
CONDUCTION (Heat transfer through solids, through DIRECT CONTACT of molecules)
Dark colors___ABSORB MORE____________ light energy/radiation
Light colors____REFLECT MORE____ ______ light energy/radiation
When molecules absorb light energy/radiation they ___gain energy/get more excited__________ and_____have more KE/heat energy/get hotter___________.
Energy cannot be created or destroyed.
Energy is transferred or transformed.
The energy is transferred to the surrounding air molecules (air resistance) and the molecules of the table (friction). The energy spreads out, but it is not destroyed.
decreases.
No energy is gained or lost when PE changes to KE or KE to PE. THe energy is just transferred/transformed.
The heat energy transfers from the cocoa to the surrounding cooler air atoms and the cooler atoms in the cup. The heat is not lost it just spreads out to cooler atoms.
Matter cannot be created or destroyed.
They gained heat energy and changed phase/state, evaporation and escaping into the air/room.
They are still there, they have just left the container/spread out.
B- The mass stays the same during a phase change from solid to liquid.
The other answers may be correct, but this is not what was being tested and recorded. You must draw your conclusion from the evidence/data.
To keep any water molecules from evaporating or escaping into the air.
(We can't measure them if they aren't in the closed container).
2 grams- Matter cannot be created or destroyed. When matter changes phase, the amount stays the same.
Solid, liquid, gas, plasma
Heat energy/ energy/ kinetic energy
solid
Gas
condensation