Space

Comets

• Primarily made of ice, rock and dust
• “dirty snowball”
• Tail points away from the Sun as it orbits
• Caused by Solar radiation.
• “Haley’s comet” every 76 years

Comets

Asteroid

• Belt lies between Mars and Jupiter
• Small, irregularly shaped rocky objects
• Orbit the sun
• Made of different things:
Metal, rock, ice, dust

Meteor

Meteoroid- Small rocky body that travels through space
Meteor- bright streak caused by friction of earth
atmosphere ex: “meteor shower”
Meteorite- meteoroid that reaches Earths surface
without burning up, can
create craters
- lethal

The Eight Planets

Greetings Earthlings
Translation… Greetings Earthlings!

Mnemonic Memory Tool

● My

● Very

● Excited

● Mother

● Just

● Served

● Us

● Nachos

Mercury

● Closest to the sun

● Second smallest

● No moons

● No atmosphere

● MANY craters

Venus

● Earths twin

● Atmosphere= carbon

dioxide and sulfuric
acid

● Yellow due to

sulfuric acid

● No moons

● Greenhouse effect=

very hot

Earth

● Rocky

● Covered with oceans

● Polar ice caps

● Atmosphere is 77%

nitrogen and 21%
oxygen

● Magnetic field

● 4.5 billion years old

● One moon

Mars

● Surface is red/

yellow from iron
oxide

● Ice caps

● Water or wind

caused surface
erosion

● Thin atmosphere

● 2 small moons

Jupiter

● Largest

● 1400 Earths could

fit inside

● Faint rings

● Red spot= hurricane

● 26 moons

◦ Lo

● Redish orangish

Saturn

● Second largest

● Many rings

● Many moons

◦ Titan
⚫

Larger than mercury

● Yellowish in color

Uranus

● Blue

● Some rings

● 21 moons

● Axis very tilted

Neptune

● Blue

● White spot=storm

● 11 moons