Based on the passage, what is the diameter of the moon? A. 2,000 miles B. 2,159 miles C. 2,300 miles D. 2,500 miles 相关知识点: 试题来源: 解析 B。解析:根据原文,月亮的直径约为2159英里,A选项2000英里、C选项2300英里和D选项2500英里都不符合,所以答案是B。反馈 收藏 ...
While it’s new, the moon is travelling between Earth and the sun. Since sunlight can only reach the far side of the moon, and the moon is in the same region of the sky as the sun, the moon becomes unobservable from anywhere on Earth for about a day (except during a solar eclipse...
804.2 square miles (mi²) 2.49109 × 109square yards (yd²) 2.24198 × 1010square feet (ft²) 3.22845 × 1012square inches (in²) Site map Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. To calculate the area, you...
When the moon moves completely into the Earth's dark shadow cone (called the "umbra") we call that a total lunar eclipse. At the moon's average distance from Earth of 239,000 miles [383,000 km], the umbra measures roughly 5,800 miles [9,334 km] in diameter. The moon is about 2...
It is here that the earliest and some of the strongest evidence for an extraterrestrial (something from outside the earth's atmosphere) cause for dinosaur extinction has come. Because the record is more complete in marine rocks, the time units studied are much smaller and more accurate. The ...
The sun stretches some 864,000 miles (1.4 million kilometers) across, according to NASA, making our host star 400 times bigger thanEarth's moon, which measures just about 2,160 miles (nearly 3,500 km) in diameter. But the moon also happens to be about 400 times closer to Earth than ...
A solar eclipse is a natural phenomenon that occurs when the moon’s orbit around Earth brings it directly between Earth and the sun, blocking all or part of the Sun's light from reaching parts of the Earth's surface. In atotal solar eclipse, the Moon completely covers the Sun, causing...
The ovipositor is the egg-laying apparatus of female tiger crane flies. It’s a slender, needle-like structure found at the end of the abdomen. The presence and shape of the ovipositor can be a useful clue in identifying tiger crane flies, as it’s quite distinctive from other insects suc...
In this country that grows more food than any other nation on this earth, it is unthinkable that any child should go hungry. —Sela Ward 47 Happiness is a conscious choice, not an automatic response. Knowledge, like food, must be taken within limits. You must know only as much as you ...
hikers can walk through the Bristlecone Pines, one of the oldest living organisms on Earth. Great Basin offers several experiences unique to its borders, including tours of the Lehman Caves, which offers over 300 shield formations in its explorable depths. The park is open year-round, but some...