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science final

Day and night are caused by earth's rotation on its axis
One complete revolution of Earth around the sun takes about one year
Earth has seasons because Eath's axis is tilted as it moves around the sun
When the north end of Earth's axis is tilted toward the sun, North America will experience more indirect rays and longer days
The Phase of the moon you will see depends on how much of the sunlit side of the moon faces Earth
From new noom phase to full moon phase you see more of the lighted side, then less of the lighted side of the moon
For a solar eclipse to occur the moon must be directly between Earth and the sun
During what phase can lunar eclipse occur full moon
When are the tides highest? when the sun, Earth, and the moon are nearly in a line
Tides are caused mainly by differences in how much the moon pulls on different parts of Earth
It's a basic law of physics that for every force, or action there is an equal and opposite force, or reaction
Putting rockets into space was made possible by the development of multistage rockets
Geosynchronous satellites above the equator stay above the same point on Earth
One major use of space stations is to conduct scientific research
Scientists think the moon was formed when a large object struck Earth and material from both bodies combined
Galileo though that the dark, flat parts of the moon's surface were oceans
Much of what scientists know about the mooon has come from studying moon rocks gathered by astronauts
Earth's rotation takes about 365 days
One of the main uses of satellites is photographing Earth's surface
An equinox occurs when neither end of Earth's axis is tilted toward or away from the sun
Because the moon rotates once for each revolution around Earth, you never see the far side of the moon
The amount of the lighted side of the moon you can see is the same during new moon and full moon phase
You are more likely to see a lunar eclipse than a solar eclipse because you must be in th emoon's shadow to see a solar eclipse
When do neap tides occur? when the sun's pull is at right angles to the moon's
Photographs of the far side of the moon show that the far side is much rougher than the near side
The model in which Earth is at the center of the system of planets is called the geocentric system
The heliocentric system gained support when Galileo observed that Venus goes through phases similar to those of Earth's moon
The two factors that combine to keep the planets in orbit are gravity and orbital speed
The tendency of a moving object to continue moving in a straight line or a stationary object to remain im place is called inertia
The sun produces energy by nuclear fusion
What layer are you looking at when you look at a photgraph of the sun? photosphere
When compared to the gases around them on the sun, sunspots are cooler
What do all the inner planets have in common? They are small and have rocky surfaces
The atmospheres of the gas giant planets cannot escape into space because although they are big, the planets have little mass
What do the first four outer planets have in common? They are much larger than Earth and are made mainly of gases
Pluto is different from the other outer planets because it is small and has a solid surface
What shape are the orbits of most comets? long, narrow ellipses
The asteroid belt is located between Mars and Jupiter
Meteoroids usually come from comets or asteroids
When a meteoroid enters Earth's atmosphere, it produces a streak of light called a meteor
Copernicus explained that the sun is at the center of the system of planets
Earth is unique among the planets because of its oceans
Saturn's rings are made up mostly of chunks of ice and rock
Uranus is diffferent from most other planets because it rotates on its side
Stars are classified according to their size, brightness, and temperature
What color are the hottest stars blue-white
A star is born when a nebula is born
All stars begin their lives as parts of protostars
The lifetime of a star depends on its mass
A supernova is the explosion of a dying medium-size star
When stars begin to run out of fuel, they first become white dwarfs
The Milky Way Galaxy is a type of spiral galaxy
One piece of evidence that supports the big bang theory is the observation that most galaxies are moving away from each other
The theory that astronomers have developed to describe the formation of the universe is called the big bang theory
The brightness of a star depends on its size and temperature
Scientists think that our universe is approximately 10 to 15 to billion years old
The Hertzsprung-Russell diagram shows that main sequence stars are mostly cool and bright
The force that tends to pull together the matter in stars is nuclear fusion
Black holes form from stars that collapse extremely fast
Galileo saw that much of the moon's surface is covered with round pits called maria
Created by: angfranklin