5769741
Description
Flashcards by Nyakek Roum, updated more than 1 year ago
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Created by Nyakek Roum
almost 8 years ago
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| Question | Answer |
| About 2 000 years ago, who proposed the idea of geocentric? | Artistole |
| What is geocentric? | It is a model of the solar system showing the Earth in the middle of all other planets. |
| Who proposed the idea of heliocentric model in the 1500's? | Corpernicus |
| What is a heliocentric model? | A heliocentric model is when all planets revolve aroumd the Sun. |
| When was the telescope invented and why? | The telescope was invented in the early 1600's so they can study distant objects. |
| What is spectroscopy? | Spectroscopy is a scale that breaks down light into its spectrum of color. |
| What are astronomical units?(AU) | Astronomical units(AU) is what scientist use to mesure distances within the solar system. |
| What is a light year? | A light year is the distance that light travels in a year. Scientist use this to mesuare distances outside the solar system. |
| What is a nebulae? | A nebulae is when gases and dust are pulled together by gravity. |
| What are terrestrial planets and what are they made up of? | What are terrestrial planets and what are they made of |
| What are our terresteial planets and what are they made up of? | Our terrestrial planets are Mercury ,Venus ,Earth and Mars. They are closest to the sun and are made of solid material |
| What are our Jovian planets and what are they made up of? | Our Jovian planets are Jupiter Saturn Uranus and Neptune.They are also known as gas planets because they are made up of gases such as hydrogen and helium. |
| What is a meteorite? | That is when a meteroid is pulled into Earth's atmosphere and crashes into Earth. |
| A comet is... | An object that is made up of mostly dust and ice that travels in a elliptcal path around the sun. |
| Difference between a lunar eclipse and a solar eclipse? | A solar eclipse is when the moon is between the Earth and the Sun, a lunar eclipse is when the Earth is between the moon and the Sun |
| Fun fact | Humans entered space for the first time in 1961. |
| Microgravity is... | is the condition when there is no gravity and it affects/reduces the body mass of an individual. |
| Fun fact | A satellite in a geosynchronous orbit,moves at the same pace of Earths rotation. |
| What is optical interferomety? | That is a technique using telescopes that have better resoulution or the pictures are improved. |
| A radio telescope is... | a telescope that has a radio receiver and an antenna system used to detect any extraterestrial activites |
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