People will not fall off the earth because the earth is round. AT BF Gravity holds everything to the earth. AT BF答案 1. 根据The earth is big. It is a big round ball.知道本句正确。 2. 根据最后一段知道是重力的作用,而不是因为地球是圆的。 3. 根据最...
adbcabcdbaadaa,5,If the earth is aball,why don’It we fall off?The reason (理由)is 1 there is gravity(引力).Gravity is 2 strange force(力).When you slip(滑倒) on something,you never 3 into the air ,but instead,you always fall 4 the ground.Things fall to the earth ...
If you turn something around your head on a string (细绳) ,it goes around in a circle until you let go of the string. Then it flies off in a straight line. “Switching off” gravity would be like letting go of the string. Things not attached to the Earth would fly off in a ...
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Supposing we could magically turn off gravity.Would buildings and other structures(建筑物) float away?What happened would depend on how strongly the things were attached to the Earth.The Earth is moving at quite a speed,moving at over a thousand miles per hour.If you turn something around you...
2.你能告诉我为什么火星上的重力只有地球上的八分之三吗Can you tell me why the gravity on Mars is onlyon the Earth? 相关知识点: 试题来源: 解析 【答案】three eighths of that【核心短语/词汇】on Mars: 在火星上;three eighths: 3/8; on the Earth: 在地球上【解析】考查分数的表达法,分子用...
The gravity on the earth is much ___ that on the moon, do you know why? [ ] A. as strong as B. strong than C. so strong than D. stronger than 试题答案 在线课程 D 练习册系列答案 互联网多功能作业本系列答案 黄冈金牌之路妙解教材系列答案 黄冈金牌...
2.What would happen if the gravity on Earth was suddenly turned off?Supposing we could magically turn off gravity.Would buildings and other buildings float away?What happened would depend on (依靠) how strongly the things were attached (吸附) to the earth.The earth is moving at quite a ...
Newton explored the meaning of gravity. 牛顿发现了引力的意义。 Last month electric lights and telephones andautomobiles and airplanes became available. 上个月,电灯,电话,汽车和飞机成为了现实。 Only last week did we develop penicillin andtelevision and nuclear power, and now if America's new space...