Collisions
What is energy?
energy is the ability to make things work.
What is energy transfer?
energy transfer is energy moving from one place to another or from one form to another.
What is the difference between potential and kinetic energy?
kinetic energy relates to motion and potential energy is having the capacity; develop into something in the future.
Name 2 examples of a renewable resource and 2 examples of a nonrenewable resource.
renewable: sun, wind, water
nonrenewable: coal, gas, oil
What are waves?
Waves are regular patterns of motion that transfer energy from place to place without transferring matter.
What happens during a collision?
when a collision happens, energy is transferred between the objects that collide.
Name all 8 types of energy.
electrical, chemical , potential, motion, light, thermal, solar, sound.
What are some example of energy being transfered?
*answers may vary*
motion to sound; motion to heat; electrical to light; electrical to heat;
Where does all energy in Earth come from?
The Sun!
What are the three main parts of a wave (100 bonus points if you can draw a diagram of a wave)
wavelength, amplitude, crest
Do only humans use energy? Give an example
No. humans use energy when moving or eating, but water also uses energy when it moves, and wind uses energy when it blows leaves along the ground.
Is all energy the same?
Though all energy makes things happen or work, different types of energy do different things.
How could you increase potential energy of an object?
You could move the object to greater height or distance or you could increase an object’s mass.
Do renewable resources have little or no impact compared to nonrenewable resources?
Some renewable energy sources can have environmental impacts as well, but the benefits of renewable energy sources is that they are much more easily replenished.
How are transverse waves different than longitudinal waves?
in a traverse wave, the energy moves up and down. In a longitudinal wave, the energy moves side to side.
List 3 different collisions you experience everyday.
*answers will vary*
List 2 things that convert motion energy into electrical energy.
- a turbine can convert motion energy into electrical energy
- rushing water can transfer motion energy into electrical energy
*answers may vary*
How do we know if something has energy?
when things work or move, we know they have energy.
Name 2 disadvantages of using fossil fuels.
- they run out quickly
- they pollute the Earth quickly
- they are hard to replace
What do waves transfer?
energy
If an object moves faster, does it transfer more or less energy? What if it gets heavier?
Objects that move faster and that are heavier transfer more energy.
Describe an example for each of the following: Energy transfer by heat, light and sound.
*answers may vary*
When you bounce a ball eventually it will stop bouncing. Where does the energy go?
The ball starts to loose kinetic energy as it is being transferred to sound, thermal, and potential energy.
Explain why using an electric car is not always good for the environment.
Even though electric cars run on electricity instead of gas (which is a fossil fuel), it depends on where the electricity is coming from. If it is coming from a solar panel that produces electricity from the sun, it is good for the environment. If the electricity is coming from a power plant that uses coal to produce electricity, then it is not good for the environment.
Explain how particles transfer energy in a wave.
Particles vibrate and move against each other to transfer energy through a wave.