Karteikarten
Space
Karten in diesem Stapel (28)
- 1What are Comets?Comets (also known as dirty snowballs) are made of rock, ice and dust. The have an elliptical orbit, and their tail faces away from the sun
- 2What is the difference between meteors, meteorites and Meteoroids?Meteors enter the Earth's atmosphere, but burn up before reaching the ground (these are our shooting stars)
Meteorites hit the grounds (we own an australite)
Meteoroids are parts of an asteroid or comet that orbit the earth - 3What is an asteroid?Asteroids are leftover materials from the formation of stars. They are made primarily from rock, metal and carbon
- 4Where is the asteroid belt located?The asteroid belt is located between Mars & Jupiter
- 5What is gravityGravity is a force of attraction between any two objects with a mass
- 6Is gravity considered extremely weak or extremely strongExtremely weak
- 7What are stars?Stars are giant balls composed mainly of gases and plasma in a superheated state.
- 8What are the two main forces within a star?Hydrogen and Helium
- 9How is the structure of a star determined?The structure of a star is determined between two different forces;
The inward pull of gravity ( where the material of the star falls towards the centre) and the outward pull of gravity (Pressure caused by the heat from nuclear fusion) - 10What are stars first created fromLarge clouds of interstellar dust & gas known as Nebulae
- 11What are the two types of Stars?High mass and Low/Medium mass
- 12What is the lifecycle of a low/Medium mass star?Nebula - Main sequence star - Red Giant - Planetary Nebula - White dwarf - Black Dwarf
- 13What is the lifecycle of a High mass star?Nebula - Main sequence Star - Red Supergiant - Supernova - Black hole OR Neutron Star
- 14How is an average star created?A star is formed when a cloud of dust and gas (known as nebula) groups together, forming a ball of gases (mainly hydrogen). Gravity pulls all space junk together to create a disk around the star. After a few million years, the space junk disperses and we are left with a star
- 15What is the Big Bang theory?The big bang took place 13.8 Billion years ago, when the entire universe was contained within a hot & dense point of singularity. The energy expanded from the point, creating space and time.
- 16How were the first gases created?After the universe started expanding, the universe began to cool. This made gravity start grouping atoms together. Hydrogen and Helium were the first elements to be created
- 17What evidence do we have for the big bang?We know that our universe is still expanding, which bring us to the conclusion that is the universe is expanding on every side from one point, it must have once been at a point of singularity
- 18What are the advantages and disadvantages to using ground based telescopes?Ground based telescopes are good in the way that they are stable and will be used for many many years, but can be corrupted by things such as weather patterns, the earth's movement & atmospheric pollution
- 19What are the advantages & Disadvantages of using satellites?Satellites are not corrupted by the Earth's movement or atmospheric pollution because they are outside of the earth, but can be problematic because they are much harder to control and can be lost due to technical difficulties, resulting in more space junk
- 20What are black holes?Black holes are extremely dense objects with strong gravitational pull that not even light can escape!! It is considered one of the strangest and most fascinating things in our universe
- 21What measurements are used in space?We use two main measurements in space; Light years and Astronomical units.
- 22What are Light years?Light years are not a measure of time, but a measure of distance. A light year is how far a light beam can travel in a year (6 trillion miles!!!)
- 23What is an astronomical unit?An astronomical unit is the average distance between the earth and the sun (150 million km)
- 24What is the speed of light?3 000 000 000 m/s
(the number 3 with three lots of three zeros on the end) - 25How long does it take light to reach earth?8.3 minutes
- 26What are the different types of galaxies?Spiral, Barred Spiral, Lenticular, Elliptical & Irregular
- 27What is the difference between a spiral and barred spiral galaxy?A Spiral galaxy is simply a spiral-shaped galaxy, whereas a Barred Spiral galaxy has a bar-shaped structure in the centre of the galaxy
- 28What is a lenticular galaxyA lenticular galaxy is the type of galaxy that is between a spiral and and an elliptical galaxy
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- 9 Science (Space) Karteikarten am Space, erstellt von Taya Roberts am 02/11/2015.
- Erstellt von
- Taya Roberts
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