Planets

Question 1

Rock Planets:

Answer 1

• Mercury, Venus, Earth, Mars
• Called rock, inner, and terrestrial planets
• Made up of rock, have metallic materials, have solid crust
• Planets have different sizes, surfaces, and atmospheres

Question 2

Mercury:

Answer 2

• Smallest planet
• Closets planet to the sun
• No atmosphere
• Mass is so small it can’t create or have an atmosphere
• Has many craters
• Core, mantle, crust

Question 3

Venus:

Answer 3

• Second planet from the sun
• Same size as earth
• Rotates east to west
• Rotates slowly 1 day longer then 1 year
• 97% carbon dioxide (Pressure is 90x greater then earth)
• Average temp is 460 degrees Celsius (Hottest Planet)
• Internally like earth

Question 4

Earth:

Answer 4

• Living planet that can support major animals and plants
• “Third Rock from the sun”
• Atmosphere performs multi-tasks
  
  • Absorbs uv rays
  • Destroys most meteors
  • Produces green house effect
  • This allows presence of water
• Moderate temps support varieties of life

Question 5

Sun:

Answer 5

• Brightest star in the sky
• Greek Word meaning “wanderer”
• Planets seem to wander around the sky
• Planet and sun make up solar system
• Largest object in the solar system
• Diameter is 10x the sixpence of largest planet, Jupiter
• Mostly made up of hydrogen gas
• Makes up about 99% of solar system mass
• Uses nuclear fusion that creates large amounts of energy
• Gravitational pull keeps planets in orbit

Question 6

Mars:

Answer 6

• 4th planet from the sun
• 2 irregular shaped moon
• No water, very little to support life
• Reddish color because of soil
• Has large amount of iron oxide, commonly called rust
• Winds produce dust storms that last for months

Question 7

The outer planets:

Answer 7

• Jupiter, Saturn, Uranus, Neptune, Pluto
• “Gas Planets” because primary made of H and He
• Strong gravitation pull due to large mass
• Have a thick gas and liquid layer covering small core

Question 8

Jupiter:

Answer 8

• Largest planet
• 1,000 earth’s could fit in Jupiter
• Has the most moon’s with 63
• Jupiter is a ball of helium and hydrogen
• 11 years and 10 months equals one revolution
• 5th planet from the sun

Question 9

Saturn:

Answer 9

• Ball of Helium and Hydrogen
• 7 rings mostly made of dust and ice particles
• 6th planet from the sun
• Next largest amount of moon’s
• Largest moon, Titan, is larger then the smallest planet Mercury

Question 10

Uranus:

Answer 10

• 20 year seasons
• One of the coldest planets average temperature -357 degrees
• One revolution 84 years
• 27 moons
• 13 rings
• 7th planet from the sun

Question 11

Neptune:

Answer 11

• 8th planet from the sun
• Discovered just recently in science terms in 1846
• Rotation is complete in 16 hours

Question 12

Pluto:

Answer 12

• Classified as dwarf planet in 2006
• Discovered by KS farmer in 1930 with a telescope made of implement parts
• Only 1,400 miles wide
• 1 day = 6.5 days in earth
• 248 years for revolution
• 100 lbs person would weigh 7 lbs on Pluto
• Very cold temperature -400 F
• Takes 8 hours for sun’s rays to reach the surface