Which describes the waves formed by tsunamis? (1 point)
• They cause small waves both in the open ocean and near the shore.
• They cause small waves in the open ocean, but large ones near the shore.
• They cause large waves both in the open ocean and near the shore.
• They cause large waves in the open ocean, but small ones near the shore.
They cause small waves in the open ocean, but large ones near the shore.
Which correctly identifies ways that earthquakes and tsunamis can cause destruction? (1 point)
earthquakes: landslides
tsunamis: open up large cracks in Earth's crust
earthquakes: landslides
tsunamis: move blocks of land up or down
earthquakes: open up large cracks in Earth's crust tsunamis: erosion of beaches
earthquakes: erosion of beaches tsunamis: move blocks of land up or down
earthquakes: landslides
tsunamis: move blocks of land up or down
To determine which option describes the waves formed by tsunamis, we can refer to scientific knowledge about tsunamis.
Tsunamis are typically caused by undersea earthquakes or volcanic eruptions. When these events occur, they can displace a large volume of water, creating powerful waves that travel across the ocean.
In the case of tsunamis, the correct option is: They cause large waves in the open ocean, but small ones near the shore.
Tsunamis usually start as small waves in the open ocean because they have a long wavelength which makes them less noticeable. As they approach the shore, and the water depth decreases, the wave energy concentrates, causing the waves to grow taller and more destructive. This is why tsunamis can cause significant damage and devastation when they reach coastal areas.