What Is The Evidence For Earth’s Interior Being Composed Of Regions Of Different Density??
radioactive decay. What is the evidence for the Earth’s deep interior being composed of regions of different density? Mars Venus and Earth are much less heavily cratered than Mercury and the Moon.
What evidence suggests that Mars had an active hydrologic cycle in the past?
What evidence suggests that Mars had an active hydrologic cycle in the past? Stream-like features with teardrop shaped islands suggest flowing water valleys that appear to have been made by catastrophic flooding dendritic drainage networks and minerals that form only in the presence of water are all found on Mars.
What are the main reasons there are so few impact craters on Earth compared to the Moon?
Up until the 1970s many scientists thought the reason there were so few craters on Earth compared to the Moon was because our atmosphere caused the small asteroid debris to burn up (as meteors) and slow down as it passed through the atmosphere so that it didn’t have enough energy left to blast a crater in the crust.
What theory of Mercury’s origin can best explain the fact that its core is made of such dense materials?
What theory of Mercury’s origin can best explain the fact that its core is made of such dense materials? the range of wavelengths or frequencies over which electromagnetic radiation extends. Wavelength was shifted upward (frequency decreased). This means that the source and the detector are moving away from each other.
Which of the following is the underlying reason why Venus has so little wind erosion?
Which of the following is the underlying reason why Venus has so little wind erosion? –Without rotation it lacks significant wind and therefore lacks wind erosion.
What surface features do Mars and Earth have in common quizlet?
The surface features that Mars has in common with Earth are volcanoes sand dunes and large canyons.
Why is meteor crater so well preserved?
The crater is about 1.2 kilometers (a little more than 0.5 miles) across and 200 meters (650 feet) deep. Its features such as the ejecta blanket beyond its rim are well preserved because of the crater’s youth it has not experienced extensive erosion.
Why do we not see evidence of more crater impacts on Earth quizlet?
On planets like Venus Earth and Mars we do not see as many craters because most of them have been eroded away by wind rain volcanic activity and other forces. On Mercury where there is no atmosphere there is no weather to erode away the craters so most of the craters are still visible.
What are the two reasons that the Earth appears to have relatively few impact craters quizlet?
There are so few craters on the Earth because most have been destroyed due to plate tectonics and erosion. There are so few craters on Venus because lava flows have filled in the craters.
What would cause a crater on the surface of Earth?
A crater is a bowl-shaped depression or hollowed-out area produced by the impact of a meteorite volcanic activity or an explosion. Craters produced by the collision of a meteorite with the Earth (or another planet or moon) are called impact craters. … The Earth’s moon has many craters.
What is inside planet Mercury?
Did you know facts about Mercury?
- A year on Mercury is just 88 days long. …
- Mercury is the smallest planet in the Solar System. …
- Mercury is the second densest planet. …
- Mercury has wrinkles. …
- Mercury has a molten core. …
- Mercury is only the second hottest planet. …
- Mercury is the most cratered planet in the Solar System.
How can we explain that Mercury’s core is made of such dense materials?
The theory says that a large body (like a rogue proto-planet) might have collided with the young Mercury blasting away its crust (and much of its mantle) leaving the mostly metallic material at its centre. (Think of it as smashing a boiled egg so that the shell and the white fly away leaving a little yellow core.)
Which of the following is thought to explain why Venus has so much more atmospheric gas than Earth?
Venus has gained much more gas through outgassing than has Earth. Earth has lost much more gas to thermal escape than has Venus. Because of its lack of magnetic field Venus has been able to gain gas through the impacts of solar wind particles while Earth has not gained gas in this way.
Which of the following most likely explains why Venus?
| Question | Answer |
|---|---|
| Which of the following most likely explains why Venus does not have a global magnetic field like Earth? | its rotation is too slow |
| What are the two geological features that appear to set Earth apart from all the other terrestrial worlds? | plate tectonics and widespread erosion |
Why were the interiors of the terrestrial worlds hot after solar system formation describe how they have cooled since then?
Because the Moon and Mercury are smaller in size their interiors cooled over the billion years after they formed to the point that their lithospheres thickened and the mantle convection is confined.
Which of the following characteristics do Mars and Earth have in common?
Mars is only about one-half the diameter of Earth but both planets have roughly the same amount of dry land surface area. On Mars we see volcanoes canyons and impact basins much like the ones we see on Earth. … Many of the same physical land features we see on Earth also exist on Mars.
Which of these features does Mars not have in common with the Earth?
The surface of Earth has land forms including the sea and land with mountains valleys craters and volcanoes. Mars also has valleys craters and volcanoes but doesn’t have the same composition of water Earth does.
Why are astrobiologists intrigued about evidence that groundwater has seeped onto the surface of Mars?
Why might astrobiologists be intrigued by evidence that groundwater has seeped onto the surface of Mars? water is essential for life so the presence of groundwater seeping onto the surface of Mars raises intriguing possibility of life on Mars. The two “moons” of Mars were once suggested to be artificial.
What evidence observed on Mars indicates that at one time it may have had a warmer climate and a water cycle similar to that on earth quizlet?
What evidence observed on Mars indicates that at one time it may have had a warmer climate and a water cycle similar to that on Earth? Large valleys that resemble river channels. Saturn’s rings are composed of __________.
Why do meteors land in craters?
The meteors want the craters to be filled so the earth can be smoother. The craters you see are the ones that have yet to be filled yet all the others are all full so that it looks like nothing happened. The moon has more craters because it’s smaller and not as many meteors hit the moon compared to earth.
How are craters formed on the surface of the moon?
What evidence do we have that the surface features on Mercury were not formed during recent geological history?
Answer: we have not any evidence of that the surface feature on Mercury were not form during recent geological history .
What evidence do we have of volcanic activity on the moon quizlet?
What evidence is there for volcanic activity on the Moon? The general consensus is that the last mare basalts erupted around 2 billion years ago. The Moon has some younger impact craters such as Copernicus seen here and Tycho.
Do all inner planets have atmospheres?
Although Mercury’s blanket of gas can barely be called an atmosphere every inner planet has one. The atmosphere is where planets show the greatest range Mercury’s is helium at near-vacuum pressures Venus’s is extremely dense and acidic ours is nitrogen-oxygen and Mars’s is a thin carbon dioxide atmosphere.
What is the main reason that Earth’s inner core is liquid today?
What is the main reason that Earth’s interior is liquid today? pressure on the core from Earth’s outer layers.
What is the basic reason that we have seasons on Earth what is the basic reason that we have seasons on Earth?
Earth’s tilted axis causes the seasons. Throughout the year different parts of Earth receive the Sun’s most direct rays. So when the North Pole tilts toward the Sun it’s summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun it’s winter in the Northern Hemisphere.
Which of the following world’s does not show evidence of the current presence of liquid or frozen water?
Which of the following worlds does not show evidence of the current presence of liquid or frozen water? Venus has water vapor in its atmosphere but no evidence of liquid or solid water.
What are the main reasons there are so few impact craters on Earth compared to the Moon?
Up until the 1970s many scientists thought the reason there were so few craters on Earth compared to the Moon was because our atmosphere caused the small asteroid debris to burn up (as meteors) and slow down as it passed through the atmosphere so that it didn’t have enough energy left to blast a crater in the crust.
What created most of the craters in the solar system what else could create craters hint think of craters on Earth?
What created most of the craters in the solar system? … craters are the scars of the strikes of objects on the planets or moons. Most of the craters are from space debris. Planetismals in the asteroid belt also created craters.
What variables affect the shape and size of the crater?
The size and shape of the crater and the amount of material excavated depends on factors such as the velocity and mass of the impacting body and the geology of the surface. The faster the incoming impactor the larger the crater.
What is Mercury’s atmosphere made of?
Atmosphere. Instead of an atmosphere Mercury possesses a thin exosphere made up of atoms blasted off the surface by the solar wind and striking meteoroids. Mercury’s exosphere is composed mostly of oxygen sodium hydrogen helium and potassium.
What is Mercury surface features?
What is unique about Mercury atmosphere?
Instead of a substantial atmosphere Mercury possesses an ultra-thin “exosphere” made up of atoms blasted off its surface by solar radiation the solar wind and micrometeoroid impacts. These quickly escape into space forming a tail of particles according to NASA.
How earthquakes show us the inside of the Earth
Reference Table Page 10-Inferred Properties of Earth’s Interior-Hommocks Earth Science Department
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