29.C,细节理解题,根据第二段"He calculated that the circumference(圆周) of the Earth was 28,600 miles(46,000 kilometers). "他计算出的地球的圆周周长是28600英里(46000公里),可知,他确信地球是圆的,故sphere是一个球体,故选C.30.B,词义猜测题,根据第二段大意可知,Era
He calculated that the circumference (圆周) of the Earth was 28,600 miles ( 46,000 kilometers). Actually, The true size of the Earth is 25,000miles (40,000 kilometers ).Eratosthenes's measurement was wrong, but it was very close to the truth.For many centuries after Eratosthenes lived,...
The noun "Earth" comes from the word "earth" meaning dirt. Interestingly, the earth is actually covered more by water than by land. Almost everything about the size of the earth (i.e. radius, diameter, surface area, and volume) depended on knowing the circumference of the earth. The...
How many Earth diameters make up the height of a solar prominence?Question:How many Earth diameters make up the height of a solar prominence?Solar Prominence:A solar prominence is a huge bright filament rooted in the sun's photosphere. They are eruptions of the sun's plasma caused by ...
"The Andes Mountains, 287 miles [462 kilometers] away, and although taller than the plane's altitude, lay below the sensible horizon, marked by the white horizontal line in the photograph," NASA officials wrote in adescription of the flight. "The Earth's curvature explains this phenomenon, ...
He found out that the circumference (圆周) of the Earth was 28.600 miles(46.000 kilometers). The true size of the Earth is 25.000 miles (40,000 kilometers).Eratosthenes' 26 was wrong, but it was very close to the truth.Many centuries ago, people made 27 of the Earth. However, they ...
Multiplying by pi yields a circumference of something like 24,900 miles (40,065 kilometers). To travel around that circumference in 24 hours, a point on Earth's surface has to move at 1,038 mph (1,669 kph). A launch from Florida's Cape Canaveral doesn't get as big a boost from ...
What is Earth's volume, mass, density and surface area? The volume of Earth is 260 billion cubic miles (1.086 trillion cubic kilometers), while its mass is 6.6 x 1021tons (6 x 1021metric tons), according to NASA. With these values known, and Earth's oddball shape accounted for, it ...
So now we can easily move step by step if, and only if, we know how many degrees we want to move. Of course, normally, we don't think about the Prime Meridian and we normally talk about kilometers or miles. This is why I've also created this inner function: ...
How big is UK in square kilometers? The area of the UK is 244,820km2. Trending Questions Is it possible for a triangle to have more than 1 obtuse angle?What is the ninth square number and the twelfth square number?What happens to the area of a circle if the circumference is doubled...