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.( B)6. What is a tsunami wave like? A. It is ...
The energy that creates tsunami is a disturbance in the Earth—an earthquake. The shaking energy of an earthquake pushes the water. Tsunami waves can be more powerful than ordinary water waves, too. Tsunami waves in deep ocean waters can be gigantic. They can be miles long and lift up 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...
They result from oscillations of the electromagnetic field and don't need a physical medium, so they, like other types of electromagnetic wave, can travel basically anywhere, through a vacuum, or through atmosphere or water. 它们产生于电磁振动,而且不需要物理媒介,所以它们,和其他类型的电磁波一样,...
born out of her ruminations on the stressors facing humanity – whether that’s climate change, toxic internet culture, war or uncertainty around artificial intelligence. Above all, her work emphasises the importance of hope and how the creative and scientific communities can look for ways to coll...
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 ...
The speed of light is measured at 299,792,458 meters per second. Neither matter nor energy can surpass this speed. However, physicists have shown that something else can. Answer and Explanation:1 Information can travel faster than light through the process of quantum entanglement. If a change ...
Animals History & Culture Travel Health Science & Nature Lifestyle Shows More Log In SubscribeThe best of National Geographic delivered to your inbox Sign up for more inspiring photos, stories, and special offers from National Geographic.Sign Up...
What is the difference between a variable speed drive, a variable frequency drive and an AC drive? Variable speed drives (VSD) are sometimes called Variable Frequency Drives (VFD) or AC drives. Using variable speed drives to control motors can lead to big savings ...