Hot air ..., cold air ...

Rise, sink
How many years that our Solar system form?

About 13.8 billion years.
The Voyager 2 visit what planet?

What is the smallest country?

Who Discovered Gravity
Issac Newton
How many layers does Earth have? There name?

4 these are: Crust, Mantle, Outer core, and inner core.
The closest planet to the Sun?
Mercury

Describe low and medium mass stars.
Begin at a Nebula- form a protostar- create low or medium mass star- red giant- End lif a white dwarf.
The biggest country?
Russia
Who invented the light bulb
Thomas Edison
What gas is important for us to breathe?
Oxygen
Does Earth orbit the Sun?

Yes
Describe the life of high mass stars.
Begin at a Nebula- form a protostar- create high mass star- a red supergiant-explore supernova- form blackhole or neutron stars.
What is the country that has the Amazon river?
Brazil
Who was a leading female scientist in the field of radioactivity?
Marie Curie
The hottest planet in our Solar system

Venus
How many days does Moon make 1 orbit around Earth?
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1 month
Which is the only planet not named after Greek gods or goddesses?
Earth
What is the highest GPD of people in the world?
Luxembourg about $122 740/person![]()
You might find a big turtle here. This famous scientist traveled to the Galapagos islands and used his research to prove his theories of evolution.
Charles Darwin
The largest planet in our Solar system

Jupiter
Which planet( s) have no moon?
Mercury and Venus
In what year did Pluto become reclassified as a dwarf planet?

2006
The GPD highest by country
The USA about $19.485 trillion 
Who created the periodic table of elements?
Dimitri Mendeleev