Energy: The ability to do work or make matter change

Two Types of Energy: Kinetic Energy Potential Energy https://www.youtube.com/watch?v=7K4V0NvUxRg

Examples:

Potential Energy Potential Energy is the energy an object has from its position or shape. Potential energy is stored energy in an object.

Potential Energy An object with potential energy has the ability to move, change, or do work. Formula (gravitational potential energy): PE = weight x height

How are Potential Energy and Kinetic Energy related? Energy can be transformed from potential to kinetic energy. If an object has more potential energy at first, then it will have more kinetic energy when it starts moving.

Types of Energy All energy falls into two categories: Potential: stored energy and energy of position or condition Kinetic: motion of waves, electrons, atoms, molecules and substances.

Forms of Energy POTENTIAL KINETIC Chemical Nuclear Gravitational Elastic Radiant Electrical Mechanical Sound Thermal

1. Chemical Energy stored in the bonds of atoms and molecules. Example: Matches, food, batteries

2. Nuclear Energy stored in the nucleus of an atom. The energy that holds the nucleus together. Example: Breaking down Uranium

3. Gravitational Energy of position or height. Example: two skiers at different heights on hill Energy of position or height. Higher = more gravitational energy.

4. Elastic Example: spring, rubberband Energy due to a material’s condition. (squeezed together or stretched out)

5. Radiant Electromagnetic energy that travels in waves like light. Example: Visible Light

6. Electrical Example: computer, phone Movement of electrons.

7. Mechanical Movement of a substance from one place to another. Example: Riding a bike Movement of a substance from one place to another.

8. Sound Movement of energy through substances in waves. Example: bell ringing

9. Thermal Example: boiling water The vibration or movement of atoms and molecules. (AKA heat)

Energy Resources Renewable = can be used and replaced in nature over a short period of time Non-renewable = Cannot be replaced after it is used or can be replaced only over thousands or millions of years

RENEWABLE NONRENEWABLE

RENEWABLE NONRENEWABLE Benefits Drawbacks Clean energy Won’t run out Expensive Less existing infrastructure Sun not always out Not always windy Damage to ecosystems when building dams Benefits Drawbacks Cheaper More widely available and already in place Pollution Contribute to climate change Will eventually run out