Earth has an atmosphere. The atmosphere protects us from harmful rays. What is the atmosphere made of? A. Water vapor B. Gases C. Soil D. Rocks 相关知识点: 试题来源: 解析 B。解析:地球有大气层,大气层保护我们免受有害射线的伤害。大气层是由气体组成的。选项 A 水蒸气只是大气层的一部分...
D. The speed of the E. arth's rotation. 相关知识点: 试题来源: 解析 B。解析:科学家通过发射气象气球主要收集大气压力、温度和湿度等数据。A选项气象气球不仅仅收集降雨量。C选项气象气球不是主要用于收集天空中云的数量。D选项地球自转速度与气象气球收集的数据无关,所以答案是B。
The atmosphere protects the earth. What is the atmosphere made of? A. Gas and dust B. Water and fire C. Earth and moon D. Stars and gas 相关知识点: 试题来源: 解析 A。本题考查对大气层组成的了解,大气层由气体和尘埃组成。B 选项水和火不对;C 选项地球和月亮不对;D 选项星星和气体不对...
结果1 题目What percentage of the Earth's atmosphere does nitrogen make up by volume? A. 21% B. 50% C. 78% D. 99% 相关知识点: 试题来源: 解析 C。原因:It makes up about 78% of the Earth's atmosphere by volume.。反馈 收藏 ...
The atmosphere protects the Earth from harmful rays. What is the atmosphere made of? A. Water and air. B. Gases. C. Soil and water. D. Rocks and minerals. 相关知识点: 试题来源: 解析 B。大气层是由气体组成的;A 选项水和空气不准确;C 选项土壤和水错误;D 选项岩石和矿物质错误。
Astronomers have peeked into the atmosphere of a "super-Earth"for the first time. Their analysis...BotkinKowacki, Eva
The mesosphere is the layer where meteors entering the Earth’s atmosphere break up. There are enough gases in the mesosphere to create friction which causes the meteors to burn up. We can see those at night as shooting stars. Thermosphere: Thin Atmosphere ...
A warmer planet doesn’t just raise temperatures. From wildfires to flooding to coral bleaching, here are some real-world implications.
Deziel, Chris. What Happens When A Meteoroid Enters Earth's Atmosphere? last modified March 24, 2022. https://www.sciencing.com/happens-meteoroid-enters-earths-atmosphere-3611/ Recommended Joe Mcnally/Getty Images The first ancient human fossils that scientists discovered were of Neanderthals (Homo...
According to the professor, 400 years ago what was believed to be true about Earth's atmosphere? A. It prevented high-speed motion of objects on Earth. B. It would only move if Earth moved. C. It was not affected by the motion of the Sun. ...