Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
Meteorites are heavy. Most meteorites are much denser than ordinary Earth rocks. The unusual weight is due to high iron content. Even stone meteorites will feel heavier in the hand than most Earth rocks. Meteorites likely traveled in space for millions of years before visiting us here on Earth.
Which of the following planets is NOT a gas giant? a. Earth b. Jupiter c. Saturn d. Uranus 16. The sun gets its energy from a. burning fuel b. nuclear fusion c. shrinking due to gravity d. convection 17. The number of on any planet can be used to estimate how old the surface is.
Our Early Atmosphere The Earth’s physical features are what affect our daily lives and how we live them. But it’s what people don’t see that affects them the most, the atmosphere. This is the gaseous mass or envelope surrounding a celestial body, and retained by the celestial body's gravitational field. It’s an invisible shield that protects us from many harmful things and keeps our planet in balance. Our atmosphere is about 300 miles thick and is made up of many gaseous chemicals: 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and trace amounts of other gases.
Mercury is the closest planet to the sun. Mercury was named after the Roman God of Commerce and Thievery. It might have gotten its name because of the way it quickly appears and disappears from Earth's view. Mercury is the second smallest planet in the solar system; Pluto is the only planet that is smaller. Earth's diameter is about 7,200, while tiny Mercury has less than half of that size, about 3,000 miles in diameter.
AUCKLAND UNIVERSITY OF TECHNOLOGY THE EXISTENCE OF BLACK HOLES WHAT ARE BLACK HOLES? DO THEY REALLY EXIST? TEVITA PAEA ID: 0102315 LITERATURE REVIEW ESSAYS “WHAT ARE BLACK HOLES?DO THEY EXIST? : If they do, HOW ?”If not: HOW?” Our solar system consists of ten planets revolving around the Sun. The Sun serves as a magnet that uses its gravitational pull to hold the solar system together.
Three of the four inner planets (Venus, Earth, and Mars) have atmospheres substantial enough to generate weather. All of the inner planets have impact craters and tectonic surface features such as rift valleys and volcanoes. The first of the inner planets, and closest planet to the Sun, is Mercury. It is the smallest planet in the Solar System and has no natural satellites. Its only known geological features are impact craters and lobed ridges or rupes (steep slopes or cliffs), probably produced
Sunspots near the Sun's equator rotate at a faster rate than those near the solar poles. The following high resolution image shows a close-up view of a moderately large sunspot. The field of view covers about 60000 km horizontally, and 38000 km vertically. The penumbral diameter of this sunspot is about 16500 km; the Earth, with an equatorial radius of 6378 km, would cover up the umbra but not the penumbra. Sunspots can be quite small ([IMAGE]1500 km diameter), and reach sizes up to 50000 km.
Will a displacement reaction occur? ✓ No copper is less reactive than iron 1 Which two metals would react with aluminium nitrate in a displacement reaction? Calcium Potassium i) From the diagram, what supports the idea that Pluto is a planet? ✓ Pluto still orbit the sun 1 iii) From the diagram, what supports the idea that Pluto is not a planet? ✓ Pluto at a different angle 1 Pluto has a diameter of 2 300 km.
Carbon dioxide concentrations were about five times higher than they are today and the average global temperature was 6 – 8 degrees higher than it is today. The earth’s temperature depends on the balance between energy entering and energy leaving the planet’s system. Electromagnetic radiation enters the planet’s system, and much of it is converted to infrared radiation (heat) which warms our planet, and sunlight is used by plants for photosynthesis. One has to only look at the example of the Moon to see how vital the Earth’s atmosphere is for the existence of life. The Moon has no atmosphere to block some of the sun’s rays in the day or to trap heat at night, and this is why temperatures on the Moon range from -233 degrees Celsius to 123 degrees Celsius at those respective times.