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Seismic waves are sent through the earth during earthquakes, and those
energy waves are what cause the ground to shake as they travel through
it.Seismic waves travel at different speeds when they pass through
different types of material, so by studying seismograms, scientists can
learn a lot about Earth's internal structure.Body waves are seismic
waves that travel through Earth's interior, or its 'body.' Surface waves
are seismic waves that travel through Earth's surface.Surface waves are
important, but they don't provide much information about what happens
below the surface. For this, we need to study body waves so that we can
see what Earth's 'body' is like.
There are two types of body waves, called P waves and S waves. P
stands for primary waves because these waves travel the fastest and are
detected first. S stands for secondary waves because these are slower
than P waves, arriving second on the seismogram.
I think the answer is D:all of the above.
Answer:
Air molecules scatter blue light more efficiently than other colors.
Explanation:
The sunlight has many colors and each of them has a different wavelenght. The color blue has shorter wavelengths and higher frequencies than the other colors. So, as sunlight goes through the air, the blue part causes charged particles to oscillate faster than the red part does and it is scattered more efficiently than the other colors and that's the reason for the sky to be blue.
Answer:
Age is a problem for both types of countries, here's why
Explanation:
In developing countries age is a problem because this state has to provide jobs and care for growing children, and providing education for them is expensive and time consuming, not to mention basic needs like housing and food. It's hard for developed countries too because these countries have to deal with an older population that is declining in health. The state needs to provide assisted living and care for this part of the population.
1.We have access to space to see it is round
2. We have 24 hour time zones. How could it be noon in one place and midnight in the other?
3.We are able to study lunar eclipses and see how they work (greeks discovered the earth is round with that method.).
4. Why do ships slowly sink into the distance? Exactly
5. Surveying other planets.
