Section 25B (Earth Science)

1. reaction engine

Newton engine

flux capacitor

explosion/

black powder

inertia (things in motion tend to continue in motion unless acted on by an outside force)

for every action there is an equal and opposite reaction

force x mass = acceleration

Voyager 1

1. Sputnik 1

New Horizons

the moon

100 miles (outside of earth) orbit

ust far enough away from the earth’s surface to be out of the atmosphere

pro- less expensive

example: TV station provider

example: International Space Station

con - you need more of them

21,000 miles (outside of earth) orbit

con- more expensive

pro - you need less of them

phone

TV

1. studying the earth’s surface

1. climates

navigation systems

weather

1. salinity

1. ice cover

internet

Probes

Satellites

Rovers

Landers

Satellites