What is the difference between kinetic and potential energy
Kinetic energy involves motion and Potential energy is the stored energy within that object when it's not in motion.
100
What kind of energy is stored in a battery?
Chemical Energy
100
What is the difference between renewable and non-renewable resources
Renewable energy are energy sources that can be used over and over without getting all used up. Non-renewable energy are energy sources that are limited and once they have been all used up there is no way to create more of them.
100
What kind of energy to plants use during photosynthesis?
a) chemical energy
b) light energy
c) nuclear energy
d) kinetic energy
Light energy from the Sun
100
What device do people, businesses, hospitals use to generate electricity during a blackout?
A generator
200
What is the potential energy of a 6kg frisbee that is on the ground?
0
200
What are 3 ways heat is transferred?
Conduction, Convection, Radiation
200
What are 3 types of renewable energy and 3 types of nonrenewable energy
Renewable = solar, wind, water
Nonrenewable= fossil fuels, coal, oil,
200
What are 3 ways that humans add carbon into the atmosphere? Explain
1) exhaling as a part of cellular respiration
2) burning fossil fuels
3) cremation
200
What are 3 ways that you can reduce your electric bill?
- unplug anything you're not using
- turn off the lights when you're not in the room
- don't leave the TV on if you're not really watching it
300
You are on roller blades on top of a small hill. Your potential energy is equal to 2000 joules. The last time you checked your mass was 120 kilograms. What is the height of the hill?
1.7m
300
A thermometer shows that the outside air temperature is colder than the temperature it takes to turn water into ice. However, ice on the sidewalk melts.What probably caused this?
a) The air heating the sidewalk
b) The sidewalk reflecting sunlight into the air
c) The wind causing the ice on the sidewalk to melt
d) The sunlight making the sidewalk warmer than the air
d) the sunlight making the sidewalk warmer than the air
300
What are 2 advantages and 2 disadvantages of renewable energy?
advantages = available everywhere and doesn't harm the environment
disadvantages= the equipment is expensive and it is affected by the weather
300
Whats the difference between a carbon source and carbon sink. Give examples to help your answer.
A carbon source is something that produces carbon and a carbon sink is where carbon ends up as a result of the carbon cycle and is usually stored there. An example of a carbon source are the burning of fossil fuels and example of a carbon sink is the ocean.
300
How is electricity transported to your house?
Electricity is creating in a power plant and is transported through power lines and transporters to houses, apartments and other businesses.
400
The potential energy of an physical science book is 100 joules. The book is 9 meters high. What is the mass of the book?
1.13kg
400
What is the law of conservation of energy and how does it relate to energy transfers?
The law of conservation of energy says that energy cannot be created or destroyed, it is just transformed from one type of energy into another type of energy.
400
What are 2 advantages and 2 disadvantages of non-renewable energy?
advantages = cheap and it's what we're already familiar with
disadvantages = it's going to run out and it causes pollution to the environment
400
Which portion of the carbon cycle is driven directly by energy from the Sun?
a) The formation of coal beneath rock layers
b) The release of carbon dioxide during volcanic eruptions
c) The emission of carbon dioxide from oil-burning power plants
d) The formation of sugars by plants on Earth’s surface
d) the formation of sugars by plants on Earth's surface
400
Which of the following statements best explains what an electric generator does?
a) converts electrical energy into mechanical energy
b) converts solar energy into mechanical energy
c) converts mechanical energy into chemical energy
d) converts mechanical energy into electrical energy
d) converts mechanical energy into electrical energy
500
What is the velocity of a 500kg school bus that has 4,000 joules of energy?
4m/s
500
Explain the energy transfers that happen when a car is driving down a highway. State the types of energy in these transfers.
Chemical to kinetic.
Gas burns to start an engine to make the wheels move.
500
Categorize the following as renewable or non-renewable
1. A field of corn ________________________
2. Oil in Alaska _________________________
3. Sunshine ____________________________
4. Fish in the ocean ______________________
Draw at least 4 stages of the carbon cycle and write one word for each stage that best explains its main purpose.
1) fossil fuels burned into the air
2) air contains carbon dioxide
3) plants take in that carbon dioxide and make oxygen
4) those plants die and that carbon is added to the ground
500
Explain all the steps needed to create electricity using a generator
1) burning fossil fuels or nuclear elements
2) heating up water to create steam
3) the steam moves the turbine
4) the turbine moves the magnet in between the coils
5) the magnet moves and create an electric current