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science final
| Question | Answer |
|---|---|
| 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
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