1) The protoplanet hypothesis explains the formation of solar systems with three steps - a cloud of dust and gas begins swirling, most material accumulates to form the sun, and remaining material forms smaller clumps that become planets. 2) The sun is over 100 times wider than Earth, could fit 1 million Earths inside if hollow, has a surface of 5500°C and a core of over 15 million °C. It gives off charged particles called solar wind that flows at around 400 km/s, protecting Earth with its magnetic field. 3) The planets are divided into inner, terrestrial planets like Mercury, Venus, Earth and Mars that are smaller, rockier and closer to the sun,

1. Planets & Other Objects in our Solar System

2. ProtoplanetHypothesis
Protoplanet hypothesis - is a model used to explain the birth of solar
systems.
There are 3 steps:
1) a cloud of dust and gas begins swirling
2) most of the material (more than 90%) accumulates in the center,
forming the Sun
3) the remaining material forms smaller clumps circling the center.
These are the planets.

3. ProtoplanetHypothesis

4. TheSun
Some Information:
 is almost 110 times ​wider than
Earth
 if it were hollow could ​fit almost
1 million ​Earth's inside
 surface is 5500 °C
 core is ~ 15 000 000 °C

5. TheSun
The sun gives off charged ​particles
called 'solar ​wind', that flow
very ​quickly in every ​direction.
the solar wind ​passes Earth at ~
400 ​km/s.
Earth is protected ​from the solar
wind by ​its magnetic field.

6. TheSun

7. ThePlanets

8. ThePlanets
The Planets
Inner or Terrestrial
(Also called Earth-like)
Outer or Jovian
(In reference to Jupiter)
Smaller, Rockier,
Closer to the Sun
Larger, Gaseous,
Farther from the Sun
Ex: Mercury, Venus,
Earth, Mars
Ex: Jupiter, Saturn,
Uranus, Neptune
Add flow chart to your notes

9. OtherBodiesintheSolarSystem
Asteroids: rocky or metallic bodies travelling in space with predictable
orbits.
Comets: often described as "dirty snowballs," are made up of dust and ice
Ex. Halley's comet is visible every 76 years. Last seen 1986 - next ​time 2062.

10. OtherBodiesintheSolarSystem

11. OtherBodiesintheSolarSystem
When a comet gets close to the sun it will begin to glow
and a tail will ​form. This is because the Sun heats up the
materials in the comet and ​gases are released. The gases
are pushed away by the solar wind ​creating the
appearance of a tail. The tails of some comets can
be ​millions of kilometers long.
Comets usually travel slowly orbiting the outer reaches of
the solar ​system. A close passing body can change the
comets course and it can ​end up orbiting the Sun. Comets
orbit the Sun in an elliptical path so ​they will make a
predictable appearance.

12. OtherBodiesintheSolarSystem
Meteoroids: small pieces of rock flying through space
with no particular path
Meteoroids are:
 as small as a grain of sand, as big as a car
 falling star is just a meteoroid that heats up as it
enters the Earth’s atmosphere
 if it lasts long enough to hit the Earth it's called a
Meteorite

13. OtherBodiesintheSolarSystem
Solar eclipse: Moon passes
between Sun and Earth
Lunar eclipse: Earth passes
between the Sun and Moon

14. OtherBodiesintheSolarSystem
The moon has a 5° tilt so that is why there is not an
eclipse every cycle of the moon