Forces And Energy

Question 1

Name renewable sources

Answer 1

Biomass 
Wind
Solar
Hydro
Geothermal

Question 2

Name non - renewable sources of energy

Answer 2

Fossil fuels:
Coal
Oil
Gas

Nuclear

Question 3

What is biomass?

Answer 3

Organic material stored sunlight as chemical energy.

Question 4

What is wind energy?

Answer 4

Convection energy driven by heat from sun

Can be converted to energy by wind turbine

Question 5

What is hydro energy?

Answer 5

First: Fox River, Appleton, Wisconsin, September, 30, 1882

Dam to retain water.

Sluice gates, open, close regulate amount of water through pipes.

Water transferred to kinetic energy.

Force of water turn shafts in generator.

Question 6

What is geothermal energy?

Answer 6

Heat of earth turns turbine and gets converted to energy to use

Question 7

What is solar energy?

Answer 7

Energy from the sun and get converted to electricity.
Solar cell: light energy directly into electricity

Solar panel: heat up water directly.

Question 8

What is a balanced force?

Answer 8

Two forces opposite direction equal size.

Question 9

What is a unbalanced force?

Answer 9

Two forces opposite directions not equal. Unbalanced forces change shape and movement.

Question 10

What is a force?

Answer 10

Something which can cause a change in shape or movement.

Question 11

How are fossil fuels formed?

Answer 11

Millions of years ago dead organisms settled on the bottom of porous rocks. Sand sediments impermeable rock settled on organic matter trapping carbon energy in porous rocks formed pockets of oil coal and gas.
Earth movements, rock shifts create spaces that forced to collect these energy types into well defined areas

Question 12

Kinetic energy

Answer 12

Moving things

Question 13

Sound energy

Answer 13

Moving energy through objects as longitude waves.

Question 14

Thermal energy

Answer 14

Comes from heat

Question 15

Chemical energy

Answer 15

Bonds of chemical compounds like atoms and molecules.
Released in chemical reactions: exothermic
For example biomass, petroleum, natural gas, call, stored chemical energy

Question 16

Electrical energy

Answer 16

Battery transfers stored energy charged particles, electrons, through wire. Thunderclouds: static electricity

Question 17

Gravitational energy

Answer 17

Stored in the height of an object you get potential energy when an object standstill and then you get gravitational energy when the object moves down.

Question 18

What is the law of energy?

Answer 18

Energy can be stored or transferred from object to object or place to place.

Energy cannot be created or destroyed but it can be converted from one to another