8582055
Description
Flashcards by Anne Marie Bianchi, updated more than 1 year ago
|
Created by Anne Marie Bianchi
about 7 years ago
|
|
| Question | Answer |
| what are some of the celestial bodies visible in the sky? | stars, sitting stars, moon, planets |
| Can you describe the movements of the Earth, Moon and Sun | The Earth rotates. It also orbits the sun which takes about one year. The moon orbits the Earth in about one month. |
| Distinguish between a celestial object's Rotation and Orbit | A rotation is a motion about an axis or another object. An orbit describes rotation around the sun. |
| Distinguish between a Solar and a Lunar eclipse using words and diagrams | Lunar Eclipse: when the Earth passes between the moon and the sun Solar Eclipse: when the moon passes between the Earth and the sun |
| which objects in our solar system produce light? | stars, moon, sun, planets |
| what is produced in the sun that is vital for life on Earth? | the sun produces heat, light, energy in the form of hydrogen |
| how are the inner planets different from the outer planets? | inner planets (mercury, , and rockier, made of heavy minerals like iron, and have no or few moons outer planets (jupiter, saturn, uranus, neptune) are much bigger and made up of gas |
| how is the boundary of the solar system defined/determined? | the solar system extends as far as the sun's influence; either the sun's light, its gravitational field, or of its magnetic field |
| Can you explain why we have different seasons in the Northern/Southern hemispheres? | The northern and southern hemispheres always experience opposite seasons because when the northern part of the Earth is closest to the sun, the southern is furthest |
| The Earth is tilted relative to what? | The Earth is tilted towards its own orbital plane |
| What is Insolation | the solar radiation that reaches the Earth's surface |
| What will be different if the Earth were not tilted? | we would have no seasons as one part of the Earth would always be tilted towards the sun with the other being tilted away from the sun |
| Can you list some characteristics of the Moon? | 1/4 the diameter of the Earth it's gravity affects the Earth's tides it has craters on its surface which are visible to the naked eye |
| Why do we always see the same side/face of the moon? | the moon rotates the Earth at the same speed that it orbits the Earth so we always see the same side |
| Describe the phases of the moon? | full gibbous first quarter crescent new (not visible on Earth) crescent third quarter gibbous |
| What is a star | a ball of gas (hydrogen and helium) held together by its own gravity |
| What is the closest star to our Solar system? | the sun is closest to the Earth and alpha Centauri is closest to our sun |
| What are constellations | a group of stars forming a recognizable pattern |
| What is Nuclear fusion and where does it occur? | a chemical reaction where multiple atoms combine to form a single more massive atom it takes place in the interior of the sun |
| What properties are used to distinguish stars? | Lumosity: total energy emitted chemical composition brightness radius temperature |
| Describe the spectral classes of stars? | O class - blue, very bright B class - blue A class - blue F class - blue/white G class - white/yellow K class - orange/red M class - red, very faint |
| What spectral class does our Sun fall into | G class |
| List the steps to how we believe Stars are formed | 1. Begins as a Giant Molecular Cloud - large cloud of gas 2. a Protostar is formed as gas particles run into each other 3. In the T-Tauri stage, the star will produce strong winds 4. A Main Sequence Star will take a solid shape 5. The star becomes a Giant once all the hydrogen is converted to helium 6. At the Core Fusion stage, iron begins to form in the core 7. The star's core explodes at the Supernova stage |
| What determines how a star will live its life | A star's life cycle is determined by its mass; the larger it's mass, the shorter its life cycle |
| How do stars die? | When a star burns all of its hydrogen fuel, it becomes a Red Giant. It then explodes in a supernova and the elements are scattered throughout the universe |
| What will happen when our Sun dies? | It will begin to emit tremendous heat so that all life on earth will die It will start to expand and probably swallow the inner planets The core will lose its energy and become a white dwarf slowly cooling |
| What are some benefits of space exploration? | job creation spinoff technologies education search for extra-terrestrial life and alternative hospitable planets |
| What are some of the Spin-off products from Space exploration? | Memory foam MRI technology Smoke detection |
| What are some concerns/dangers about space exploration? | 1. very costly 2. our ships are too slow 3. there are many objects and debris in space that can cause damage 4. we do not have any reliable navigational tools 5. space radiation is deadly 6. no food and water available 7. Zero gravity injures the human body |
Want to create your own Flashcards for free with GoConqr? Learn more.