How old is Casiquiare canal?
Earth scienceAsked by: Bee Williams Where is the only natural river or canal connecting two basins in the world? The Casiquiare link between the Orinoco and the AmazonAmazonThe Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about 6,300,000 km2 (2,400,000
How do meteorologists grade their past forecasts?
Earth scienceAsked by: Bee Williams How do meteorologists determine the forecast? Meteorologists use computer programs called weather models to make forecasts. Since we can’t collect data from the future, models have to use estimates and assumptions to predict future weather. The atmosphere is changing all the time, so those estimates are less reliable the further you
What model best describes the alignment of the Sun and Moon during a lunar eclipse?
Earth scienceAsked by: Marcus Cahill How will you describe the alignment of Earth Moon and Sun in lunar eclipse? When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can happen
Geo-Spherical shape of Earth
Earth scienceAsked by: Marcus Cahill The earth’s shape is a spheroidspheroidAn oblate spheroid is a famous shape. It is the shape of the Earth and some other planets. It is like a sphere squashed from the top so the circumference around the poles is less than the circumference around the equator. Shapes of this type are
A few questions about glass
Earth scienceAsked by: Karl Dance What are questions about glass? Glass Questions How can glass be a liquid if it’s so hard? How can it be so hard to drag rubber across smooth glass if friction is caused by surface roughness? What kind of crystal are crystal drinking glasses made out of? Why are crystals rare?
How much does the biosphere contribute to Earth’s entropy production?
Earth scienceAsked by: Karl Dance Why is entropy of Earth increasing? The decrease in entropy for the Earth system can be attributed to the incoming heat from the sun occurring at higher temperature on the planet’s surface during the day, whereas the same amount of heat (approximately, on average) leaving the planet during the subsequent night
Haean, South Korea: is it of volcanic or meteor impact origin?
Earth scienceAsked by: Sarah Rosales Is Korea a volcanic? There are three volcanoes in the Korean Peninsula. The biggest one is Mt. Baekdu with the last activity being recorded in 1903. The second volcano is Mt. Does South Korea have any volcanoes? South Korea has 3 Holocene volcanoes. Where are the volcanoes in Korea? The volcanoes
Can we separate a sandy, clayey & salt layer on basis of their rheological properties?
Earth scienceAsked by: Sarah Rosales Can you separate sand from clay? Quote from video: And clay is small particles and sand is large particles. You can also dig a huge hole in dirt hole and fill that dirt hole with water. Can clay be separated? The answer is Decantation. Clay is separated from water by the
Is there a freely usable map of Earth cave systems and/or density?
Earth scienceAsked by: Dave Day What is a cave map? A cave survey is a map of all or part of a cave system, which may be produced to meet differing standards of accuracy depending on the cave conditions and equipment available underground. How do they map out caves? The process of mapping caves takes patience
Interpreting Prospecting Ore Test Result
Earth scienceAsked by: Dave Day What is a high grade nickel deposit? Therefore, anything over 20 metres in thickness (significantly less thickness than other commodities) and 2% nickel grade or better would be reasonably considered high-grade. What is grade of an ore? The grade of ore refers to the concentration of the desired material it contains.