I.翻译句子1. 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 ti...
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。
We have all experienced the force of gravity. It is what happens to you when you jump up into the air. Disappointingly, we tend to fall right back down to the ground. But what if we could switch gravity off? What will happen if the gravity vanishes? Buckey, an astronomer, says that...
Gravity keeps the moon where it's supposed to be — in orbit. Peepo / Getty Images Gravity is a force that we experience every day, yet it remains somewhat of a mystery. It's the reason we stay grounded on Earth and why objects fall when dropped. Although there are several theories ...
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...
Gravity (重力) is what keeps you on the ground. It pulls you back to the ground when you jump in the air. Without gravity, you would fly into outer space. Gravity pulls everything toward the center of the Earth with a certain amount (数量) of force. This amount of force is called ...
A. The force of gravity is directly proportional to the distance between objects. B. The force of gravity is inversely proportional to the product of masses. C. Every particle attracts every other particle with a force related to their masses and distance. D. The force of gravity is constant...
on or near the surface of the Earth, the gravitational force equals your weight. On a different astronomical body like Venus or the Moon, the acceleration of gravity is different than on Earth, so if you were to stand on a scale, it would show you that you weigh a different amount than...
U1-1-What Is Force? 1062018-01 2 U1-2-Friction 552018-01 3 U1-3-Force and Motion 712018-01 4 U2-1-Magnets Attract Metals 882018-01 5 U2-2-Magnets Push and Pull 462018-01 6 U2-3-Magnets,strong or Weak? 432018-01 7 U3-1-Gravity 592018-01 8 U3-2-Gravity, everywhere 472018-01...