A force that pulls objects towards the center of the earth is called ___. A. gravity B. magnetism C. electricity D. friction 相关知识点: 试题来源: 解析 A。把物体拉向地球中心的力叫重力,“gravity”是重力;“magnetism”是磁力;“electricity”是电;“friction”是摩擦力,都不符合。反馈...
Which of the following is a force that pulls objects towards the earth? A. Electricity B. Magnetism C. Gravity D. Wind 相关知识点: 试题来源: 解析 C。重力(Gravity,C 选项)是将物体拉向地球的力,电(A 选项)、磁力(B 选项)和风(D 选项)都不是这种力。反馈 收藏 ...
The Earth has a force that pulls things toward itself. We call this force gravity (引力) . This is something we love with all the time, and hardly ever think about it. But it is a most important factor (因素) in rocket (火箭) operation and must be overcome if we are to get anywhe...
(15分)Gravity(万有引力) is a force that pulls things toward each other.Although you cannot see it, the force of gravity is everywhere. Earth's gravity pulls in one direction-down. A better way of saying that is,gravity pulls(拉) you and everything on Earth towards Earth's center....
The Earth has a force that pulls things toward itself. We call this force gravity(地心引力). This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and must be overcome if we are...
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。
13The earth has a force that pulls things toward itself. We call this force gravity. This is somethingwe live with all the time and we take1 for granted and hardly ever think about it. But it is 2most important factor in rocket operation and must be overcome if we are _3 (get) any...
The earth has a force that pulls things towards itself. We call this force gravity (重力). This is something we live with all the time. We hardly ever think about it. But it must be overcome if we want to get anywhere in space, or off the ground at all. Take the throwing of a ...
阅读理解: The Earth has a force that pulls things toward itself. We call this force gravity (引力) . This is something we love with all the time and hardly ever think about it. But it is a most important factor (
阅读理解: The Earth has a force that pulls things toward itself. We call this force gravity (引力) . This is something we love with all the time and hardly ever think about it. But it is a most important factor (