According to the passage, how many miles is the earth’s diameter A.2,000.B.4, 000.C.8,000.D.16,000. 答案 C[解析] 短文中提到,地球的表面离中心4000英里,也就是半径为4000英里,由此可知直径为8000英里。[点睛] 数字计算题。本题需要进行简单运算。听音时要把握4000英里为地球半径,而题目问的是...
Viewed from Earth, the Moon is just far enough away to have almost the same apparent-sized disk as the Sun. The angular size (or solid angle) of these two bodies match because, although the Sun's diameter is about 400 times as large as the Moon's, it is also 400 times more distant...
The diameter of the earth is about ___ . A. 2,160 miles B. 8,000 miles C. 6,000 miles D. 4,000 miles 相关知识点: 试题来源: 解析 B解析:此题题干问“地球的直径是多少”。在原文第2段第3句话指出月球的直径是2160英里,是地球直径的。因此选项B. 8,000 miles是正确答案。
In the space between the planets Mars and Jupiter, there has been found a group of small bodies which are called planetoids or asteroids.The brighest of these is Vesta, not more than 250 miles in diameter. A famous theory, called the Nebular Hypothesis, was suggested many years ago to acc...
百度试题 结果1 题目The diameter of the earth is about ___ . A.2,160 milesB.8,000 milesC.6,000 milesD.4,000 miles 相关知识点: 试题来源: 解析 B。因此选项B. 8,000 miles是正确答案。
Earth’s Structure and Composition: The shape of Earth approximates that of an oblate spheroid, a sphere flattened along the axis from pole to pole such that there is a bulge around the equator. This bulge results from the rotation of Earth, and causes the diameter at the equator to be ...
The gaseous layer that wraps around Earth reaches up to 630,000 kilometers away, or 50 times the diameter of our planet Where our atmosphere merges into outer space, there is a cloud of hydrogen atoms called the geocorona. One of the spacecraft instruments, SWAN, used its sensitive sensors...
R = a planet's distance from the sun in astronomical units. One AU equals 93,000,000 miles, the average distance from the earth to the sun. T = the time for a planet to orbit the sun in earth years V = 1 divided by the square root of R. ...
In 2005, the Cassini mission performed a close flyby of a small (500-kilometer diameter) moon of Saturn, Enceladus (Figure 4), and made a remarkable discovery. Plumes of gas and icy material were venting from the moon’s south polar region at a collective rate of about 250 kilograms of...
aThe earth's moon is located an average of 239,000 miles from the earth. It has a diameter of 2,136 miles, and its gravity is one-sixth that of earth's. 地球的月亮被找出平均239,000英哩从地球。 它有2,136英哩直径,并且它的重力是六分之一那地球的。[translate]...