Q. How do geologists use seismic waves to learn about the Earths interior?
One ingenious way scientists learn about Earth’s interior is by looking at earthquake waves. Seismic waves travel outward in all directions from where the ground breaks and are picked up by seismographs around the world. Two types of seismic waves are most useful for learning about Earth’s interior.
Q. How do geologists know about the interior of Earth?
One ingenious way scientists learn about Earth’s interior is by looking at how energy travels from the point of an earthquake. These are seismic waves (figure 1). Seismic waves travel outward in all directions from where the ground breaks at an earthquake. These waves are picked up by seismographs around the world.
Table of Contents
- Q. How do geologists use seismic waves to learn about the Earths interior?
- Q. How do geologists know about the interior of Earth?
- Q. Why the Earth’s interior is hot?
- Q. Can we live in Moon?
- Q. Can you sit on the moon?
- Q. What items are left on the moon?
- Q. How many golf balls sit on the moon?
- Q. How long would we survive without the moon?
- Q. Is the sun an explosion?
Q. Why the Earth’s interior is hot?
There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.
Q. Can we live in Moon?
While the moon’s lack of gravity isn’t quite as extreme, Courville says living long-term in any environment with reduced gravity could be detrimental to human health. Because we’d be setting up shop in a venerable desert, a lunar colony would need to secure some kind of water source.
Q. Can you sit on the moon?
Technically, yes. Several missions had a moon rover, which the astronauts sat “in” or on, if you prefer.
Q. What items are left on the moon?
Besides the 2019 Chinese rover Yutu-2, the only artificial objects on the Moon that are still in use are the retroreflectors for the lunar laser ranging experiments left there by the Apollo 11, 14, and 15 astronauts, and by the Soviet Union’s Lunokhod 1 and Lunokhod 2 missions.
Q. How many golf balls sit on the moon?
And for those of you wondering…the answer is TWO. There currently are two golf balls on the Moon. Now, that number is nowhere near the amount of golf balls just waiting to be rescued from your course’s water hazard, but you still might be wondering just how they got there.
Q. How long would we survive without the moon?
between 6 and 12 hours
Q. Is the sun an explosion?
Don’t be alarmed, but the sun is constantly exploding. These returning loops of magnetic energy can further stir the pot of charged particles on the sun’s surface, resulting in more and greater explosions of solar weather, including solar flares and big belches of radiation known as coronal mass ejections.
