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...
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...
The inner ear is a network of channels containing fluid that moves in response to sound or movement. To perform the function of hearing, the ear converts the energy of pressure waves moving through the air into nerve impulses that the brain perceives as sound. Vibrating objects, such as ...
The text mentions that the Earth is surrounded by an atmosphere. What can we conclude about the atmosphere? A. It is only made of oxygen. B. It has no effect on life on Earth. C. It protects life on Earth. D. It is always the same thickness. 相关知识点: ...
A. Only the amount of rainfall. B. Atmospheric pressure, temperature and humidity. C. The number of clouds in the sky. 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。
The Earth is surrounded by a layer of gas called the atmosphere. What is one of the important functions of the atmosphere? A. To make the Earth look blue from space. B. To protect the Earth from harmful radiation. C. To make it easier for people to travel by plane. D. To keep ...
What is the role of the atmosphere in protecting the Earth? A. Blocks harmful radiation B. Provides oxygen for breathing C. Regulates temperature D. All of the above 相关知识点: 试题来源: 解析 D。大气层可以阻挡有害辐射、提供呼吸所需的氧气以及调节温度。
The atmosphere protects the Earth from harmful radiation. What kind of radiation does it mainly block? A. Ultraviolet radiation B. Infrared radiation C. Gamma radiation D. Microwave radiation 相关知识点: 试题来源: 解析 A。解析:大气层主要阻挡紫外线辐射。
doi:10.1029/2010eo460005Spencer R. WeartJohn Wiley & Sons, Ltd
P3. What happens to the meteorolds when they pas through the Earth's atmosphere? A. They cool down. B. They pick up speed. C. They are stopped there. D. They become less destructive.B4. Choose the best word to fil in the blank in the last paragraph: Lastly, the Earth is a(n)...