Name: Date: Period: 1. are natural or artificial bodies that revolve around more massive bodies such as planets. (Satellites or Comets) 2. Most lunar craters are the result of . (volcanoes or impacts) 3. The time it takes for Earth to around the sun is 1 year.
Earth Science: Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer. 1. The four giant gas planets that are made primarily of lightweight elements are A. Mercury, Venus, Earth, and Neptune. B. Venus, Saturn, Uranus, and Neptune.
Sunspots and Flares Our Sun, the 5-billion-year-old star that sustains life here on Earth, powers photosynthesis in green plants and is ultimately the source of all food and fossil fuel. The connection and interaction between the Sun and Earth drive the seasons, currents in the oceans, weather and climate. With a core reaching a fiery 16 million degrees Kelvin (nearly 29 million degrees Fahrenheit), the Sun's surface temperature is so hot that no solid or liquid can exist there. As early as the fifth century B.C., the Chinese reported having observed dark spots on the sun. In 1960, Galileo Galilei of Italy, Johannes Fabricius of Holland, Christopher Scheiner of Germany, and Thomas Harriott of Englandeach independently
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.
Pluto is a dwarf planet; it is the farthest planet from the sun. A dwarf planet is a planet that orbits around the sun. It has an orbit of 248 years that sometimes takes it inside Neptune’s orbit. Pluto is so cold that its oxygen and nitrogen, which is easy for us to breathe, is frozen solid there. This planet is two-thirds of our moon and it is the largest rock in the Kuiper belt.
Observations of space phenomena, Mercury Project Summary, Including Results of the Fourth Manned Orbital Flight, Special Report 45,National Aeronautics and Space Adminstration, Washington, D.C., 445 p. Pecora, W.T., 1969. Earth resource observations from an orbiting spacecraft, Manned Laboratories in Space (S.F. Singer, editor), Springer-Verlag, New York, pp. 75-87. Vincent, R.K., 1997.
While moving through space these objects are known as meteoroids. The bright streaks that they produce while moving through Earth’s atmosphere are known as meteors. The term meteorite is also used for a meteoroid that has landed on the surface of a celestial body other than Earth. There are three main types of meteorites. The most abundant are stone meteorites which are primarily made up of silicate minerals such as olivine, pyroxene, and feldspar.
Have you ever looked into the night sky every day for a month to notice that Mars has moved from west to east to west again, that’s retrograde motion. Retrograde motion is a natural occurrence that appears to happen to other planets in our solar system from earth. Retrograde motion is what happens when a planet (we will use Mars as an example) looks as if it is reversing. This occurs when the Earth passes the planet. Direct motion and retrograde motion both occur with Mars, direct motion is when the planet seems to be going forward, and retrograde is when it seems to be going backwards.
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.
Space flight engineers frequently use calculus when planning lengthy missions. To launch an exploratory probe, they must consider the different orbiting velocities of the Earth and the planet the probe is targeted for, as well as other gravitational influences like the sun and the moon. Calculus allows each of thHow Calculus is Used in Astronomy Written by: Hannah Whiteoak • Edited by: RC Davison Published Jul 29, 2011 • Related Guides: Astronomers | Fuel Calculus is used in all areas of physics - and astronomy is no exception. Astronomers regularly use calculus to study the motions of planets, meteorites and spaceships. Read on to see examples of how calculus is used in astronomy.