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Social Sciences
The study of human society and of individual relationships in and to society.
5,538 Questions
Does shadows fall to the east in the winter?
Shadows fall away from the Sun.
In the morning, the Sun is in the east, and the shadow points west.
Similarly, in the afternoon, the shadow points east. This has nothing to do with summer or winter.
In the winter, the Sun is further south (assuming you live in the northern hemisphere), and the shadow will go further north. If you live in the southern hemisphere, the directions are reversed.
Edward Jenner discovered which vaccine?
Edward Anthony Jenner was an English physician and scientist from Berkeley, Gloucestershire, who was the pioneer of smallpox vaccine. He is often called "the father of immunology", and his work is said to have "saved more lives than the work of any other man".
Hydroelectric power is produced by?
Water piped downhill from a reservoir to create considerable pressure, drives turbines connected to alternators that generate the electricity. That is then transformed up to transmit it over long distances at high voltages hence low currents, for efficiency. ++++ [Original answer is: ] This is a small version you can build by yourself.
The water pushes a wheel, the wheel has a gear on the side of it mounted to the axle or pivot point. The larger the gear the better. The gear has a belt like one in a car engine. The belt attaches to a spindle on an alternator. The wires coming from an alternator run to a battery bank and will charge the batteries that are daisy chained together. From the batteries, it is recommended you have a power converter so you don't push too much power through the electrics you are powering. As long as the water is pushing the wheel the alternator will charge the batteries and provide power to your electronics.
Is water a mechanical mixture or solution?
Water is a compound, where two hydrogen atoms are covalently bonded to one oxygen atom. It is not classified as a mechanical mixture or a solution, but rather a pure substance with a definite composition.
Describe two examples of migration in Africa?
The desertification of the Sahara caused migration around 2500 BC.
• Between 100 BC and AD 1000, the Bantu or West African peoples like farmers and herders migrated to the south and the east.
Spain's Natural Resources are :coal, iron ore, lignite, copper, lead, zinc, uranium, tungsten, Mercury, pyrites, magnesite, fluorspar, gypsum, speiolite, potash, kaolin, hydropower, and arable land.
Which mathematical process is used to change centiliters to liters?
Since "centi" means "one hundredth part" a centilitre must be one hundredth of a litre, and, conversely, a litre must equal 100 centilitres. So, to change from centilitres to litres you should divide the number of centilitres by 100. This can be done by moving the decimal point 2 places to the left.
What do giant sloths look like?
giant sloths have a round body and sloped neck and a brown coat [fur] and large claws
