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| The study of themoon, stars, and other objects in space. |
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| An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates. |
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| The spinning motion of a planet on its axis. |
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| The movement of an object around another object. |
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| The path of an object as it revolves around another object in space. |
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| A system of organizing time that defines the beginning, length, and divisions of a year. |
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| The two days of the year on which the sun reaches its greatest dinstance north of south of the equator. |
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| The two days of the year on which neither hemisphere is tilted toward or away from the sun. |
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| One of the different apparent shapes of the moon as seen from Earth. |
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| The partial or total blocking of one object in space by another. |
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| The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth. |
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| The darkest part of a shadow. |
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| The part of a shadow surrounding the darkest part. |
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| The blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon. |
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| A device built to observe distant objects by making them apppear closer. |
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| These are dark, flat area on the moon's surface. |
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| The moon's surface is marked by these large, round pits. |
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| Chunks of rock or dust from space. |
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| The amount of matter in an object. |
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| The periodic rise and fall of the level of water in the ocean. |
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| The force of gravity on an object. |
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| The tide with the greatest difference between consecutive low and high tides. |
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| The tendency of an object to resist a change in motion. |
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| The movement of an object around another object. |
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| A push or a pull exerted on an object. |
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| The tide with the least difference between consecutive low and high tides. |
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| The attractive force between objects, its strength depends on their masses and the distance between them. |
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| What did the Egyptians observe in order to know when the Nile river would flood? |
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| Cultures across the world and throughout the ages have studied this to help them with know when to plant crops. |
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| The ancient Egyptians created the first ________. It had 365 days. |
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| Who borrowed the Egyptians calendar but realized there is a 1/4 of a day not included. |
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| Every year this 1/4 of a year adds up to an additional year. We call this a ____________year |
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| During a leap year February has how many days? |
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| 29 instead of the regular 28. |
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| Why does Earth have seasons? |
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Definition
| Earth has seasons because its axis is tilted at an angle of 23.5 degrees. |
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| The degree of the angle with which light strikes the Earth determines the ___________ of a given area of the Earth. |
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| Which hemisphere does the sunlight arrive at a more direct angle and is more intense? |
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| What is the day and what happens on the summer solstice? |
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| June 21 and daylight last longer than on any other day of the year. |
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| What is the day and what happens on the winter solstice. |
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| December 21 and daylight is shorter than on any other day of the year. |
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| Who is the 16th century scientific genius, was the first to define gravity and tho describe it a s a force that acts over long distances between objects that are not in contact. |
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| Who is the 16th century scientific genius to be the first to define gravity and to describe it as a force that acts over long distances between objects that are not in contact. |
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| The strength and the force of gravity between two objects depends on what two factors? |
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| Masses of the objects and the distance between them. |
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| What does Isaac Newtons First Law of Motion state? |
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| An object at rest will stay at rest and an object inmotion will stay in motion with a constant speed and direction wunless acted on by a force. |
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| True or False. The moon revolves around the Earth and also rotates on its own axis. |
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| True or False. The moon revolves around the Earth and also rotates on its own axis. |
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| True or False. The same side of the moon always faces the Earth. |
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| The phase of the moon you see depends on how much of the ________side of the moon faces Earth. |
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| When the moon's shadow hits Earth or Earth's shadow hits the moon what happens? |
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| What are the two different kind of eclipses? |
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| This happens when a new moon blocks your view of the sun. |
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| The sun is completely blocked for people who are in __________and they experience a total eclipse. |
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| During a solar eclipse, people in the ___________ see only a partial eclipse. |
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| Earth blocks sunlight from reaching the moon, the moon is in the Earth's shadow. What is this? |
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| These are caused mainly by differences in how much the moon's gravity pulls on different parts of Earth. |
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| True or False. The water rises for 6 hours then falls for 6 hours. |
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| What are tides determined by? |
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| The position of the moon and sun relative to Earth. |
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| Who was the first person to use a telescope to observe the moon? |
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| Galileo was able to see the variety of remarkable formations on what surface? |
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| Does the moon have water? |
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| It has no liquid water but there is evidence of ice near the poles of the moon. |
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| What is the theory as to how the moon was formed? |
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| Scientists theorize that a planet-sized object collided with Earth to form the moon. |
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