The Big Bang Theory
What are the three most important pieces of evidence for the Big Bang Theory?
Mixture of elements, expansion of the universe and the red-shift, and microwave background radiation.
What are all of the planets in order from the sun?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
What is Kepler's first law?
Kepler’s First Law describes the shape of an orbit. The orbit of a planet around the Sun (or of a satellite around a planet) is not a perfect circle. It is an ellipse, a “flattened” circle.
When does the center of the nebula start to get hot and dense?
When a protostar forms in the center of the nebula.
Convert the following into a regular number:
-6.56 x 10^2 = ______
What is -0.0656?
How does the abundance of hydrogen and helium support the Big Bang Theory?
Hydrogen and helium are in the same ratio throughout the universe.
Which planets are the inner planets?
Mercury, Venus, Earth, and Mars.
What is Kepler's second law?
Kepler’s Second Law describes the way an object’s speed varies along its orbit. A planet’s orbital speed changes, depending on how far it is from the Sun.
What happens when a supernova of a nearby star occurs?
Shock waves hit the nebula causing it to collapse.
Convert the following into a regular number:
8.26 x 10^3 = ______
What is 826000?
Who created the Big Bang Theory?
Georges Lemaître.
Which planets are the outer planets?
What is Kepler's third law?
Kepler’s Third Law compares the motion of objects in orbits of different sizes.
The sun is born.
Convert the following into scientific notation:
0.00098 = __ x 10^__
What is 0.00098 = 9.8 x 10^-4?
Light emitted from a star or galaxy can be separated into a lot of colors, called?
A spectrum.
Why do stars die?
Stars die because they exhaust their nuclear fuel.
What is different from a planet closer to the sun rather than a planet that is farther from the sun?
A planet farther from the Sun not only has a longer path than a closer planet, but it also travels slower, since the Sun’s gravitational pull on it is weaker.
When the energy is enriched, the nebula begins to contract further due to the gravity. Then what happens?
The nebula begins to spin and flatten.
Convert the following into scientific notation:
-76200000 = ____ x 10^_
What is -76200000 = -7.62 x 10^7?
How does Cosmic Microwave Background Radiation support the Big Bang Theory?
Microwaves are found everywhere in the universe.
How many stars are in the universe?
Estimated about 100 billion stars per galaxy.
What does Kepler's second law state about a line connecting a planet to the Sun?
It sweeps out the same amount of area in any two equal periods of time.
Nebulae are primarily composed of what element?
Hydrogen
Convert the following into a regular number:
______ = 6.42 x 10^5
What is -642000?