Kinetic & Potential Energy
What is Potential and Kinetic energy?
Potential Energy - stored energy
Kinetic Energy - motion energy
What are ways that you can save energy use?
Turn off the water, use solar panels, use fluorescent lighting, insulate your walls, turn off the lights and buy efficient appliances.
What is an example of chemical energy?
Energy stored in fossil fuels or food.
out of all the energy sources, which are renewable?
biomass, hydroelectric, geothermal, and wind energy
What does it mean to absorb, transmit, and reflect?
Absorb - soak up
Transmit - passes through
Reflect - bounce back
Give an example of when an object has kinetic energy.
pencil dropping, apple falling, going down a rollercoaster.
why can't a roller coaster go up a hill higher than the one before?
When a roller coaster goes down a hill, it doesn't only lose kinetic energy but light, heat, etc.. the rollercoaster has lost energy so it will be weaker if it goes up a higher hill.
What are the 5 types of potential energy?
chemical, elastic, electric, gravitational, and nuclear.
how is electricity made?
something burns and makes thermal energy. The energy makes water boil and steam causes the turbine to move. The mechanical energy turns into electricity.
which does not belong in the list and which is the main point from the lost:
kinetic energy
potential energy
light
sound
kinetic energy is the main point because light and sound are types of kinetic energy. Potential energy should not belong in the list because it is not a type of kinetic energy.
give an example of something that has potential energy.
food.
How does energy efficiency save our world?
Energy efficiency saves energy resources, reduces pollutants, and reduces cost.
how is nuclear energy made?
through a turbine because nuclear energy created steam and the steam pushes the turbine and makes kinetic current energy.
what are all the energy sources?
biomass, fossil fuels, geothermal, hydroelectric, nuclear, solar, tidal, and wind energy
how can gravitational potential energy turn into kinetic in this situation:
a boys hand shooting a bow and arrow.
The gravitational potential energy from the boy's hand turned into kinetic and made the arrow shootout to the target
Explain how height affects kinetic energy?
Height affects kinetic energy because the higher it is, the more gravitational potential energy there is so, there is more kinetic energy. the object will go faster.
What is the law of conservation of energy?
the idea that energy can not be lost or destroyed.
What are the 5 types of kinetic energy?
Electric, light, motion, sound, and thermal
What is a renewable resource and nonrenewable resource?
renewable - continuous supply that should keep making itself renewable, supplied faster than used up.
nonrenewable - limited supply
What is the process of heating in a lightbulb?
electrical energy is transformed into the light but the energy it is losing is heating turns thermal. That thermal energy the light bulb loses is not destroyed but spread out, making it harder to control. Thermal energy is harder to transform.
Explain how mass affects gravitational potential energy?
Mass affects potential energy because it is heavier so, there is more gravity potential.
how does the law of conservation of energy describe what really happens when oil is burnt?
When the oil is burnt, not all turns into thermal energy, some turns into light, sound, or ash. The missing energy is "lost energy".
What is light energy and thermal energy?
light - energy transferred by the movement of electric magnetic fields
thermal - energy transferred in transit from a hot to a cold object.
what are the advantages and disadvantages of biomass?
advantages- renewable source and decreases the amount of waste
disadvantages- created pollution and amount per biomass per pound burned is not high
compare and contrast parallel vs. series circuits.
differences:
parallel- less energy, many ways electricity can travel, more energy can travel
series: more energy, only one way that electricity can travel through, less potential energy from the battery can travel
Same:
-make electricity travel
- makes lightbulb light up
- fewer light bulbs = more electricity energy