sand
B.
water
C.
slate
D.
mud
The correct answer is slate.
Seismic waves travel faster in slate. They are waves of energy that move through earthquakes. The way seismic waves travel through the earth’s surface is very similar to the way other types of waves travel (water, light, sound) through the earth‘s surface.
Seismic waves are energy waves that move through the earth when earthquakes occur. The ground vibrates during earthquakes and it is the movement of seismic energy that causes the vibration.
There are two types of seismic waves and these include
The body waves are types of seismic waves that move through the Earth’s interior. That is, they travel under the ground.
Surface waves are also the type of seismic waves that travels through the Earth’s surface. This type of wave travels on the earth’s surface. Surface waves are rolling motions that contribute to most of the damages whenever earthquakes take place.
However, body waves can be classified into two, and these include
Primary waves are very fast and can moves at 7km within seconds.
Secondary waves are not as fast as primary waves and travel in different actions. Secondary waves travel at about 3.5 km per second.
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Answer: moving continents to geoscience
Explanation:
continents move around on Earth's surface and that they were once joined together as a single supercontinent
The continental drift hypothesis explains how Earth's continents have moved and changed over time.
The continental drift hypothesis illustrates how things change by explaining the movement of Earth's continents over time. This theory suggests that the continents were once joined in a supercontinent called Pangaea and have since moved to their current positions, creating new landforms and changing the shape of Earth's surface. By studying fossils, similarities in rock formations, and the shapes of coastlines, scientists have been able to map the movement of continents and understand how the Earth's surface has changed over millions of years.
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From north to south:
Denmark (Greenland, which is part of Denmark)
Spain (the Canary Islands)
Western Sahara
Mauritania
Senegal
Gambia
Guinea-Bissau