Reaching up to over 50,000 feet, they bring high force winds, giant hailstones, sometimes flooding, and great flashes of lightning, too.超级雷暴云有五万多尺的厚度，它能带来强风，巨大的冰雹，有时会引起洪水和雷鸣。These are the kinds of storms that breed tornadoes, but only if there are al...
Define Howel. Howel synonyms, Howel pronunciation, Howel translation, English dictionary definition of Howel. n. 1. A tool used by coopers for smoothing and chamfering rheir work, especially the inside of casks. v. t. 1. To smooth; to plane; as, to howel
LIGHTNING By: Aiden O’Connell. Lightning is formed when… Negative charges build their natural attraction to seek the ground for a positive charge, such. Lightning is the #1 storm killer in the U.S. Only 20% of those struck by lightning are killed. 70% survive, most with life-lon...
Static electrical charge builds up whenever two objects rub together, and in the case of lightning, the objects are moisture molecules and ice crystals in clouds. Play Video Advertisement Clouds are one of the places moisture is held and collected in the water cycle. Clouds are formed ...
One idea, thought up in the 1800s by Charles Darwin, suggests that life might have started in a "warm little pond" of chemicals that received energy from lightning. In 1953, Stanley Miller recreated this idea in a lab, generating amino acids from a mixture of methane, ammonia, water and...
Here we report observations of a relatively unknown type of discharge, called fast positive breakdown, that is the cause of high-power discharges known as narrow bipolar events. The breakdown is found to have a wide range of strengths and is the initiating event of numerous lightning discharges...
How can lightning jump from the __ground__ to the __clouds__? How do air masses form? Why do supercell tornadoes glow? How do hurricanes cause weathering erosion and deposition? How are multiple-vortex tornadoes different from regular tornadoes? Why do tornadoes have such high wind speeds?
2.【答案】B【解析】根据下文“They first saw lightning make it when the lightning hit sand on the ground.(他们第一次看到闪电使它,当闪电击中地面上的沙子时。)”可知,他们第一次看到闪电使玻璃,说明他们很久以前就开始使用玻璃了,B项“People began using glass a long time ago.(人们很久以前就开始...
Acid rain, also known as acid deposition, is caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) from power plants, cars and factories. Natural sources like volcanoes, forest fires and lightning strikes also add to the man-made pollution. SO2 and NOx become acids when they...
He hasn't time for regrets, only dreams, but the name of the one person Cropper wishes he had worked with fires off like lightning: Tina Tuner. Cropper saw the late legend three times. "I really did admire Tina. She was the closest person to Otis, I think, in the business....