Science - Galaxy, Solar Systems, and Planets Day 3

​Science - Galaxy, Solar Systems, and Planets

​TODAY’S TARGET: Observe the characteristics of the inner planets and the outer planets.​

Multiple Choice

All planets __________.

• are made of rock

• are the same size

• orbit a star

• are made of gas

​I. ​A solar system is made up of one or more stars and all the objects that orbit the star.

• There are many solar systems in the Milky Way Galaxy.

• The star at the center of OUR Solar System is the Sun.

  • The Sun produces light energy and radiant (heat) energy

​SOLAR SYSTEMS

Multiple Choice

There are many ___________ in our ______________.

• galaxies / solar systems

• stars / solar systems

• solar systems / galaxies

• universes / galaxy

Multiple Choice

Asteroids are irregularly shaped objects that orbit the Sun. Many of the asteroids are found in a region called the asteroid belt. The asteroid belt separates:

• inner from outer planets

• the Sun from the planets

• our solar system from the rest of the galaxy

• the Earth from the moon

​What do you notice about size?

​II. There are 8 planets that orbit the Sun (in OUR solar system)

• Planets are spheres, like the Sun

  • Planets do not produce energy in the form of light. Planets reflect the light of the Sun.

• Some planets (Mercury, Venus, Earth and Mars) have a rocky surface

• Other planets (Jupiter, Saturn, Neptune, and Uranus) are gas giants.

Multiple Choice

Planets are ____________.

• irregular shapes

• spheres

• many different shapes

• all the same size

Multiple Choice

Some planets have a rocky surface, while others are made of __________.

• giants

• metal

• gas

• spheres

​III. ​The four inner planets, Mercury, Venus, Earth, and Mars, are smaller than the gas giants

• Earth and Mars have moons

• The inner planets have a rocky surface

• have atmospheres that contain gases

  • Mercury’s atmosphere is extremely thin, and can’t be seen.

  • The atmosphere of Venus is so cloudy and think that the surface is never seen

Multiple Choice

The Inner Planets are __________ than the Gas Giants.

• larger

• smaller

• equal in size

• more gaseous

​Mercury

Order From Sun: 1st

Number of Moons: 0

Temperature: Coldest -290 F, Warmest 800 F

Atmosphere: None - No wind, water, air or weather

​Venus

Order from Sun: 2nd

Number of Moons: 0

Temperature: Hottest Planet 860F

Atmosphere: Mostly carbon dioxide, thick - traps heat

​Earth

Order from Sun: 3rd

Number of Moons: 1

Temperature: Mild, Coldest -114F, Warmest 116F

Atmosphere: Only planet with water on its surface, gases that surround the planet support life

​Mars

Order from Sun: 4th

Number of Moons: 2

Temperature: Winter NIghts -184F, Summer Days 77F

Atmosphere: Mostly carbon dioxide, thin - doesn't trap in heat, violent dust storms

Multiple Choice

Venus is the hottest planet in our solar system.

• TRUE

• FALSE

Multiple Choice

Earth is the only planet known to support __________.

• gas

• spheres

• moons

• life

Multiple Choice

Which inner planet is closest to the Sun?

• Mercury

• Venus

• Earth

• Mars

Multiple Choice

Venus has a thick

• Atmosphere

• Oceans

• Moon

• Planet

Multiple Choice

Which of these is NOT one of the Inner Planets?

• Venus

• Earth

• Saturn

• Mars

Multiple Choice

True or False: Of the four Inner Planets, only the Earth has a moon.

• True

• False

Multiple Choice

Being closer to the Sun means the Inner Planets are...

• warmer

• bigger

• colder

• yellow

Multiple Choice

Which of the Inner Planets is the largest?

• Mercury

• Venus

• Earth

• Mars

Multiple Choice

The surfaces of the Inner Planets are all

• made of gas

• too cold for us to survive on

• hard and rocky

• covered in water

Multiple Choice

Because they are closer to the Sun, it takes less time for the Inner Planets to travel around the Sun. This means that they have shorter ___________.

• Days

• Months

• Seasons

• Years