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Science Chap 5
Energy
| Question | Answer |
|---|---|
| The ability to do work or cause change? | Energy |
| What are the two basic kinds of energy? | Kinetic & Potential |
| What determines if energy is considered Kinetic or potential? | If it’s transferred or stored |
| Energy is measured in ? | Joules |
| When an object or organism does work on an object what happens? | It transfers energy onto that object |
| The energy of motion is called | Kinetic energy |
| The Kinetic energy of an object depends on what two things | Mass and velocity |
| How do you calculate KInetic energy | Mass x velocity(sq)/2 |
| Does mass or velocity have a greater effect on kinetic energy? | Velocity |
| Stored energy is known as | Potential energy |
| Energy associated with objects that can be stretched or compressed is called | Elastic potential energy |
| Energy that depends on height is called | Gravitational potential energy |
| The amount of gravitational potential energy an object has is also equal to the work done to? | Lift it |
| What is the formula to calculate gravitational potential energy | Weight x height |
| A leaping frog is an example of what form of energy | Mechanical energy |
| Melting ice is an example of what form of energy | Thermal energy |
| Which form of energy is associated with the motion or position of an object | Mechanical energy |
| All matter is made up of small particles called | Atoms and molecules |
| Do atoms or molecules have potential energy? Kinetic energy? Or both? | Kinetic and potential |
| When the thermal energy of an object increases its particles do what | Speed up and get warmer |
| Which form of energy- the total energy of the particles in an object? | Thermal energy. |
| Chocolate is an example of what form of energy | Chemical energy |
| The cells in your body store what form of energy | Chemical |
| What form of energy-potential energy stored in chemical bonds that hold chemical compounds together | Chemical energy |
| The food you eat is an example of what form of energy | Chemical |
| A match is an example of what form of energy | Chemical |
| Wood or wax are forms of what energy | Chemical |
| A shock from a metal door knob is a form of | Electrical energy |
| Batteries provide what form of energy | Electrical energy |
| What form of energy travels in waves that has some electric and magnetic properties | Electromagnetic energy |
| Light that you see is a form of what energy | Electromagnetic |
| Infrared radiation is a form of what energy | Electromagnetic |
| Microwaves are an example of what form of energy | Electromagnetic |
| Energy stored in the core of an atom is a form of what energy | Nuclear energy |
| The Sun creates a nuclear reaction called nuclear —blank— | Fusion |
| A nuclear reaction when the nucleus splits is called | Fission |
| Do nuclear power plants use fission or fusion reactions to produce nuclear energy | Fission |
| Potential or kinetic- when you transfer energy to an object and you chang it’s position or shape? | Potential |
| T or F- any form of energy can be converted into any other form of energy? | True |
| A change from one form of energy to another is called an | Energy conversion |
| T or F- mommy smells like burnt toast | True |
| T or F-a series of energy conversions is usually needed to complete a task | True |
| A toaster converts electrical energy to ———- energy to make toast | Thermal |
| Your body converts ———energy in the food you eat into ———— energy to move your muscles | Chemical, mechanical |
| Ultraviolet light is an example of what form of energy | Electromagnetic |
| Batteries produce what form of energy | Electrical |
| Power lines supply what form of energy | Electrical |
| Moving electrical charges produces what form of energy | Electrical |
| In an electric motor, ——— energy is converted to ———- energy that can be used to run a machine | Electrical, mechanical |
| In order to heat your body, you convert ———- energy from food you eat into ——— energy | Chemical, thermal |
| The most common conversion of energy is the conversion of potential energy to | Kinetic energy |
| When u stretch a rubberband you give it what kind of potential energy | Elastic potential energy |
| Any object that rises or falls experiences a change in its Kinetic and —— energy | Potential |
| When you toss a ball in the air and it begins to rise, its kinetic energy begins to decrease but it’s ——— energy begins to increase | Potential energy |
| Is energy destroyed over time? | No |
| When u toss a ball in the air, what point does it reach its maximum potential energy | It’s highest point before it starts to fall |
| Definition of law of conservation of energy stars that energy cannot——- | Be created or destroyed |
| When one form of energy is converted to another form of energy how much energy is destroyed in the process? | None because energy cannot be created or destroyed According to the law of conservation of energy. |
| A | |
| The energy we use today from earth are in the form of | Fuels or fossil fuels |
| What is a fossil fuel | Coal, gas and petroleum which were formed millions of years ago through geological processes |
| How was coal formed? | Plants and animals died and were compressed under high temperatures in the ground |
| Do fossil fuels create energy? | No, they store energy |
| Where did fossil fuels get the energy that they store | The sun |
Created by:
tkray
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