This is called “drawback”, and it can happen before a tsunami hits. People may be curious and go towards the water when they see the water drawing back. NEVER do this! Run to safety in the opposite direction, away from the water. 1. What is a tsunami wave like? A. It is weak...
They tell how much energy is in an earthquake.T sunamis do not happen very often, but they can be very dangerous. For your safety, know if whereyou live or travel is in a tsunami zone. If there is an earthquake, a tsunami could follow, so listen to aradio or watch TV for ...
A longitudinal wave is one where all the particles of the medium (such as gas, liquid or solid) vibrate in the same direction as the wave. Sound waves are longitudinal waves. When longitudinal waves travel through any given medium, they also include compressions and rarefactions. Compression oc...
This is called “drawback", and it can happen before a tsunami hits. People may be curious and go towards the water when they see the water drawing back. NEVER do this! Run to safety in the opposite direction, away from the water.6. What is a tsunami wave like?B A. It is weak....
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阅读下面短文,从各小题所给的A、B、C和D项中选出最佳选项。What is a wave? A wave is a disturbance that moves through matter(物质). Energy creates thedisturbance that makes a wave. Ocean waves are created when energy disturbs the water. Most waterwaves are caused by wind blowing across the...
If the medium a wave is traveling through is constant, what about the wave can change? What are superposition waves? How do shear waves travel? What are the fastest body waves? Which electromagnetic waves are used for communication? What occurs when a wave is not reflected or transmitted by...
Once it’s stored to the Cloud, you can download it to your computer and save the message to your backup files, as well as a portable hard drive for safe keeping. If the message you want to save is someone’s voicemail greeting, you won’t be able to save it by sharing it. In ...
B.They’re known to most travel lovers. C.They’re not as interesting as expected. D.They’re an example of creative engineering. 31. Which can best describe the author’s trip to Machu Picchu? A.Dangerous and tiring. B.Risky but worthwhile. ...