Answer:
d). It is easier to make a large reflecting telescope than a large refracting telescope.
f). A reflector can collect more light than a refractor.
Explanation:
A telescope is a device that is used to observe distant objects by the use of lenses and mirrors. It is also used to observe different distant objects by their reflection, absorption, emission or the reflection of the electromagnetic radiations.
Most of the professional telescopes are reflectors because :
1. The reflected telescope is able to receive more of the light when it reflects all the light falling on surface. And it is easier for making a large telescope rather then making large lenses for the refracting telescope. So it is easier to make large reflecting telescope than a large refracting telescope.
2. A reflected telescope receives all the wavelength of the light and it reflects all the light falling on the surfaces where it is refracted telescope that contains lenses cannot absorbs all the light and causes the chromatic aberration.
Answer:
Hurricanes need a lot of heat to form, which is why they usually occur over tropical seas (at least 26°C).
The sun is close to the equator, providing energy to heat the ocean.
The warm ocean heats the air above it causing it to rise rapidly.
Water evaporates quickly from the hot surface of the ocean, so the rising air contains great amounts of water vapour.
The rising air starts to spin (anti-clockwise in the northern hemisphere)
The centre of the storm - the eye - is calm.
As the air rises it cools, condenses and forms towering cumulonimbus clouds.
The rapidly rising air creates an area of intense low pressure. The low pressure sucks in air, causing very strong winds.
Once the storm moves over land it starts to lose energy and fades.
Explanation:
1) Mapping
2) Tracking
3) Military Purposes
Argentina (44.27 million) venezuela (31.98 million)
Answer and Explanation :
An Industrial Society is mainly formed to care for a huge population and derives its mass production from the use of fossil fuels, artificial fertilizers and other aids that use technology at their heart.
The industrial model an excessive working structure that needs the support of natural resources, man power, genetically modified produce and a curious need to meets the needs of an over-populated and growing society. In simple terms, since the design of this society is based on mass production, there is no natural equilibrium maintained in terms of consumption. And hence an industrial society is inherently unsustainable due to the ever growing consumerism.
