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OGW 9 weeks test
chapters 1 - 4
| Question | Answer |
|---|---|
| Who believed in an earth-centered universe? | Ptolemy |
| Who believed in a sun-centered universe? | Copernicus |
| Who discovered three laws of planetary motion? | Kepler |
| Who discovered the law of universay gravity? | Sir Isaac Newton |
| What is a symmetrically shaped oval? | ellipse |
| This name means "wanderers" | planet |
| What is the distance between the earth and sun (in miles) | 93 million miles |
| the force of attraction existing between any two objects | gravity |
| the two points inside an ellipse | foci |
| the phase of the moon displaying the most light | full |
| the tide that occurs when the moon is in line with the sun | spring |
| What contains the sun and all the heavenly bodies orbiting the sun? | Milky Way |
| Name the only 2 planets without moons | Venus & Mercury |
| What does it take the earth 24 hours to do? | rotate |
| The amount of time it takes for a comet to complete its orbit | period |
| what type of year = 365 1/4 days? | solar year |
| what is an asteroid-sized chunk of rock, dust and ice that develops a huge, bright "tail" as it approaches the sun? | comet |
| a band of comet-like objects located beyond Neptune's orbit? | Kuiper's belt |
| The noticeable part of the flower that attracts bees is the ___ | petal |
| The part of the seed that is a mini plant | embryo |
| The ____ of the plant develops into the fruit | ovary |
| An underground storehouse (plant) with layers of thick, fleshy leaves surrounding a short stem | bulb |
| Invertebrate with ability to regenerate lost body parts | crustacean |
| invertebrate with two distinct body regions | spider |
| invertebrate with 3 pairs of jointed legs | insect |
| invertebrate with strong pinchers | crustacean |
| invertebrate with 8 legs | spider |
| invertebrate with one or more pairs of wings | insect |
| process where plants change sunlight into food | photosynthesis |
| where photosynthesis occurs | chloroplasts |
| chemical catalyst used in photosynthesis | chlorophyll |
| photosynthesis requires these items | sunlight, chlorophyll, air (CO2), water |
| photosynthesis creates….. | oxygen and food for plant |
| What is a solar eclipse | when the new moon moves directly between the sun and earth, blocking the sun's photosphere from our view What is a lunar eclipse |