Gravity: Did You Know? Gravity Varies Across Earth's Surface The force of gravity is not the same everywhere on Earth. It is slightly weaker at the equator due to the centrifugal force caused by Earth's rotation and the fact that the Earth is not a perfect sphere but an oblate spheroid...
What is gravity? A. A force that pulls things towards the center of the earth. B. A force that pushes things away from the earth. C. A force that makes things float. 相关知识点: 试题来源: 解析 A。重力是使物体向地球中心吸引的力。不是推开物体或使物体漂浮。
The scientist explained to us that the force of gravity2. What scientists think is that the Earth became differentbecause of small plants growing in the water on its sur-face.3. It is obvious to the students that they should get wellprepared for their future.4. The last time we had grea...
Science has proved that the earth is what it is ___ the force of gravity. A. because of B. instead of C. in case of D. in spite of 相关知识点: 试题来源: 解析 A。本题考查表语从句。“because of”表示“因为”,句子意思是“科学已经证明地球之所以是现在这样是因为重力的作用”。表语从句...
xerted by gravity on an object is equal to its volume. 相关知识点: 试题来源: 解析 B。解析:“The results of our experiment showed that the force exerted by gravity on an object is directly proportional to its mass.”说明重力对物体的作用力与物体的质量成正比。反馈 收藏 ...
Gravity: Did You Know? Gravity Varies Across Earth's Surface The force of gravity is not the same everywhere on Earth. It is slightly weaker at the equator due to the centrifugal force caused by Earth's rotation and the fact that the Earth is not a perfect sphere but an oblate spheroid...
A. Gravity is a traditional force. B. Gravity is a curvature of spacetime caused by mass and energy. C. Gravity has no effect on the motion of objects. D. Gravity is only applicable to large objects. 相关知识点: 试题来源: 解析 B。解析:广义相对论认为重力不是传统意义上的力,而是由质量...
Gravity is the force that keeps us grounded. 1 Load The demand for services or performance made on a machine or system. 1 Force Strength or energy as an attribute of physical action. He used all his force to open the stuck window. 1 Load A burden or heavy pressure. He felt the load...
What is the force that keeps the planets in orbit around the sun? A. Gravity B. Magnetic force C. Electrical force D. Friction 相关知识点: 试题来源: 解析 A。引力使行星围绕太阳运行。选项 B 磁力不是使行星围绕太阳运行的力。选项 C 电力不是使行星围绕太阳运行的力。选项 D 摩擦力不是使行星...
A force that attracts one object to another. Science, Please! The Earth is pulling everything towards its center. What is gravity? A Victim of Gravity The Earth is pulling everything towards its center. To have gravity, an object must have mass. What is gravity? To have gravity, an obje...