e) The Sun is an unlimited source of energy. How does the Sun create that energy?
f) Why is the Sun important for life on Earth?
g) Why do astronauts wear spacesuits when they go to the moon?
h) Define the term 'eclipse'.
Answers
Answer:
e = The simple answer is that the sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. ... Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat.
h= the total or partial obscuring of one celestial body by another. b : the passing into the shadow of a celestial body — compare occultation, transit. 2 : a falling into obscurity or decline also : the state of being eclipsed his reputation has fallen into eclipse. 3 : the state of being in eclipse plumage.
Answer:
e) The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom.
f) The sun is the closest star to Earth. It radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produce.
g) A spacesuit protects astronauts from those extreme temperatures. Spacesuits also supply astronauts with oxygen to breathe while they are in the vacuum of space. They contain water to drink during spacewalks. They protect astronauts from being injured from impacts of small bits of space dust.
h) an occasion when the moon or the sun seems to completely or partly disappear, because one of them is passing between the other and the earth.