... variables (based on mankind's limited understanding of Venus) are its atmosphere, land surface, and astronomical positioning (orbit). The sun, which is an external force on the climate system, also affects Venus' climate. Based on several scientific exploration missions, we now know much more about Venus' climate than ever before ... % of all the sunlight reaching the planet. This not only makes Venus the brightest object in the night sky (after the sun and moon), but also makes observational study very difficult, as we are unable to observe the surface from space. This has required many...

• Word Count: 2107
• Approx Pages: 8
• Grade Level: Undergraduate

... industrial revolution. This is because industry means burning coal and oil in great amounts. This rises the levels of Carbon Monoxide in the air which has the ability to trap heat. So, eventually as CO2 rises so does the temperature of the Earth. In fact, global warming is expected to ... of methane gas in the atmosphere. This excess methane gas carries more water vapor into the atmosphere and condenses at much higher altitudes than the sun will strike. It is important to realize that environmental issues should be considered a global matter. Even when it seems to happen only in a ... ...

• Word Count: 1670
• Approx Pages: 7
• Grade Level: High School

... all have an effect on the Earth in various ways. The Earth's orbit brings the planet closer to the Sun at one point in its 100,000 year trip. The Earth's tilt also changes just a few degrees over a period of 40,000 years or so, but enough to change the position ... of the polar ice caps relative to the Sun. Finally, the procession of the equinoxes also moves the poles closer to or further away from the Sun over a period of approximately 23,000 years. Each of these cycles by itself may not have a ... states that temperatures are, indeed, rising with the global mean surface air temperature...

• Word Count: 1437
• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate

... to that on earth because of comparable atmospheric densities. Its rough rocky landscape makes it difficult to navigate objects. Conditions on Mars must also be taken into consideration if scientist plan to reach her. Winds can reach several hundred miles per hour with dust storms lasting weeks and ... different theories, which would be able to warm the planet and actually be successful. One theory suggests building two large mirrors, which would reflect the sun's radiation toward Mars, eventually heating up the atmosphere and producing greenhouse gases. This idea seems a bit far fetched....

• Word Count: 1265
• Approx Pages: 5
• Grade Level: High School

... occur at the same time. Natural variations in temperature could be caused by variations in the earth's orbit, or variations in the sun's output, or several other factors including sulfur dioxide emitted by volcanoes. The precise contributions of these natural causes of temperature variations are ... middle of the next century. The warning will be the greatest at the higher latitudes of the Northern Hemisphere, with the largest temperature rises occurring in winter. Most areas will experience summertime highs well above 100 degrees Fahrenheit. New temperature records will be set each year....

• Word Count: 1457
• Approx Pages: 6