Life cycle of Stars
What is a nebula?
It is a cloud of gas and dust that can collapse to form a protostar.
How big is the moon?
About 2,000 miles across.
What planet is the Earth in?
The third planet from the Sun.
How fast do volcanoes grow?
Volcanoes are created over approximately 10.000-500.000 years by thousands of eruptions.
How does night and day work?
The Earth rotated about its axis once every 24 hours, plunging about half of the globe into darkness and illuminating the other half at any one time as the Sun comes in and out of view. This is what causes night and day.
What causes dust and gas to pill together and form a protostar?
Gravity pulls dust and gas together to form a protostar.
Does the moon have volcanoes?
Yes, the moon has some volcanoes but it "dead".
Which planet has the most moons?
Saturn. It has 82 moons.
How hot are volcanoes?
Temperatures of up to 1000 degrees Celsius.
Do asteroids hit the Sun?
No, asteroids have ever been observed to hit the Sun, but that doesn't mean that they don't!
How long is a stars life cycle?
Around 40,000 years to longer than 10 billion years.
How many moons can fit in Earth?
We can fit about 50 moons inside the Earth.
Which are the four "gas giant" planets?
Jupiter, Saturn, Uranus, and Neptune.
What are volcanoes called?
Sometimes called stratovolcanoes.
Does the Sun have many layers?
Like the Earth, the Sun has layers. But unlike the Earth, the Sun is entirely gaseous; there is no solid surface.
Do all stars have the same life cycle?
Yes. All stars begin life in the same way.
Does the moon have day and night like the Earth?
Yes it is
How old is the Sun?
Roughly 4.6 billion years old.
How are volcanoes formed?
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface.
How many days does the Sun take to rotate on its axis?
The Sun rotates on its axis about once every 26 days.
Who discovered the life cycle of stars?
Physicist Ralph H. Fowler.
Does the moon produce its own light?
No. As bright as it can appear, all the light we see is reflected from the sun.
How many Earths could fit inside the Sun?
A million.
How many volcanoes are there?
There are more than 15000 active volcanoes on the Earth.
How far from the Sun to the Earth?
The Sun is 93 million miles away from the Earth.