4th Grade Ch 10 Lesson 2 How Are Resources Used For Energy

Ch. 10 Lesson 2How are

resources used for energy?

Uses of Sun’s energy:

1. plants use it for photosynthesis

2. solar energy transferred from plants animals thru. food chains

Uses of Sun’s energy:

3. solar cells/panels collect energy

4. sunlight warms Earth

Other renewable energy sources:

wind energy

Other renewable energy sources:

energy from flowing water

nonrenewable energy resourcessupplies that exist in limited amounts or are used much faster than can be replaced in nature

orerock rich in minerals that can be removed from Earth

fossil fuels made from organisms that

lived long ago examples:1. coal 2. natural gas3. oil (petroleum)

coalformed

from ancient plants

how coal is formed:1. millions of yrs. ago, dead plants

were buried in swamps2. layers of dead plants hardened

& formed sedimentary rock by heat & pressure

3. chemicals stored in these organisms became coal

when coal is burned, releases energy from sun

collected by ancient plants

impact of fossil fuels:mining fossil fuels harms environment

impact of fossil fuels:oil spills cause pollution & kills marine life

impact of fossil fuels:burning fossil

fuels releases harmful substances that causes air pollution, (incl. acid rain) & global warming

ACID RAIN FORMATION

conservationusing only the resources you need

as efficiently as possible

recyclingsaving, collecting, or using materials again

instead of treating them as waste