Show:
Planets
Seasons
Moon
Stars
100
The Sun is a star
What type of celestial object is the Sun?
100
The seasons are caused by the tilt of the Earth as it orbits the Sun.
What causes us to have seasons?
100
The revolution of the Moon around the Earth causes you to see different portions of the lighted side of the Moon.
What are the phases of the moon?
100
The energy of the Sun is crated by the nuclear reactions at the Sun's center.
Where does the energy of the Sun and all organisms on Earth come from?
200
A day on Earth is the rotation around the sun.
What is a day on Earth?
200
Rotation makes day and night while revolution causes the seasons.
What is the difference between rotation and revolution?
200
Mass is a measure of how much stuff is in an object while weight is how much gravity there is pulling on the mass.
What is the difference between mass and weight?
200
Nebula, Protostar, Main Sequence
What are the steps of the life cycle of the Sun?
300
The order of the planets from the Sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
What is the order of the planets from the Sun?
300
Equinox is equal nights. Solstice is the point where the sun reaches either the point farthest north of the equator or the point farthest south.
What is the difference between solstice and equinox?
300
The Moon tries to pull at everything on Earth to bring it closer. The combined gravitational pull of the Earth and the Moon causes oceans to rise and fall, two tides a day.
How does the moon affect the tides?
300
The Sun is a star.
What type of celestial object is the Sun?
400
Every planet rotates on its axis and revolves around a star and reflects the stars light. All planets are shaped like spheres.
What ares some similarities between the planets?
400
Objects that are closer together have more gravitational pull.
How does the distance between objects affect the amount of gravitational pull they have?
400
The Sun is a star. There are low mass stars and high mass stars. When high mass stars run out of hydrogen they start fusing the helium at their cores, creating carbon and oxygen. The massive stars keep fusing heavier and heavier element until their core is full of hot, dense iron. That is the end of the road, because no energy comes from fusing iron.
Will the Sun exist forever? Why or Why not?
500
The inner planets are smaller in size, have solid surfaces, have greater density, fewer moons and orbit the Sun faster than the outer planets.
How are the inner planets different from the outer planets?
500
One month.
How long does it take the moon to go through one cycle?
500
Mass stays the same, weight changes depending on where you are on the planet. Different planets have different degrees of gravity depending on the distance between planets from each other.
If you go to another celestial body, will your mass or weight change? Why?
500
Low mass stars live a long life and high mass stars live a short life. The smallest stars are about 1/10th the mass of the sun. They are cool, dim, red, and live for trillions of years. The largest stars are 100 times the mass of the sun or more. They are hot, bright, blue and live fast, die young.
Which type of star has a longer life span, high or low mass stars and why?