1. What Factors Could Affect An Impact Crater’s Shape And Size??
- the mass of the impacting object
- the density of the impacting object
- the velocity of the impacting object and.
- the geology (type of rock) of the surface the object strikes.
What factors might affect a crater’s appearance?
The factors affecting the appearance of impact craters and ejecta are the size and velocity of the impactor and the geology of the target surface.
How does the angle of impact affect the crater size and or shape?
What are the factors that affect the size of an impact crater quizlet?
The factors affecting the appearance of impact craters and ejecta are: size of the impactor velocity of the impactor and geology of the target surface.
How does the shape of a meteor affect the size of the crater?
The depth and diameter of the crater depends on the mass and velocity of the meteorite. A faster traveling or more massive meteorite will have more kinetic energy so it will leave a larger crater [3-8].
How big can impact craters be?
These range in diameter from a few tens of meters up to about 300 km (190 mi) and they range in age from recent times (e.g. the Sikhote-Alin craters in Russia whose creation was witnessed in 1947) to more than two billion years though most are less than 500 million years old because geological processes tend to …
Does density affect the size of an impact crater?
The density of a meteorite will affect the impact made on the Earth. … On the other hand the impact made by the less dense meteorite will be shallow but will cover a larger area. So you have a large crater that is not very deep.
How does the size of a terrestrial planet influence the amount of cratering on the planet’s surface?
How does the size of a terrestrial planet influence the amount of cratering on the planet’s surface? Smaller planets have a more heavily cratered surface because it takes more geological activity to erase craters.
What causes craters on the moon?
How do you determine crater size?
- Crater depth can be calculated from the shadow length as before.
- Upload the image into HiView and use the measuring tool to.
- count the pixels.
- Use the shadow formula.
- d= tan(90-θ) X L.
- d = tan(90 – 72) x (1899 x 25) cm.
- d = 15425 cm = 154 m.
What are the two reasons that the Earth appears to have relatively few impact craters?
Why are there so few craters on Venus and the Earth? There are so few craters on the Earth because most have been destroyed due to plate tectonics and erosion.
What are bright circles around impact craters called?
the bright circles around impact craters are called. Maria.
What are the four processes that shape planetary surfaces?
Explanation: The four common Planet Surface Processes are: Cratering Volcanoes Erosion and Weathering (chemical and physical). Accretion collisions and radioactive decay would be required in the formation.
What might cause most meteorites to be rounded in shape?
As in the case of a bomb explosion the shape of the resulting crater is round: ejecta is thrown equally in all directions regardless of the direction from which the bomb may have arrived. … For this reason the vast majority of impacts produce round or nearly round craters just as is observed.
How do impact craters change over time?
Why are impact craters important?
Impact craters allow scientists to study a planet’s geological history—even when the records are buried beneath the surface. During an impact buried material is ejected while outward pressure pushes the rock at the crater’s edge upward forming a rim.
What caused the biggest crater on Earth?
The Vredefort crater with an estimated diameter of 300 kilometres is the world’s largest known impact structure. It was created when an asteroid measuring at least 10 kilometres landed on Earth an estimated 2 billion years ago.
What is the largest impact crater?
The Vredefort crater
The Vredefort crater /ˈfrɪərdəfɔːrt/ is the largest verified impact crater on Earth. It was 160–300 km (99–186 mi) across when it was formed what remains of it is in the present-day Free State province of South Africa.
What are most craters in the solar system are caused by?
What are most craters in the solar system caused by? Why are there so many cratered surfaces in the solar system? There was much debris left over from the formation of the planets and moons and many collisions in the early solar system.
What is crater collapse factor?
According to Geological Implications of Impacts of Large Asteroids and Comets on the Earth (Amazon link) the collapse factor is a factor that accounts for an enlargement of the crater Terrestrial impact craters 10 km in diameter have all been enlarged by collapse of a transient cavity produced by the impact.
How do meteorites affect the surface of the earth?
Tons of micrometeorites strike the Earth each day. … Meteorites of larger sizes strike the Earth less frequently. If they have a size greater than about 2 or 3 cm they only partially melt or vaporize on passage through the atmosphere and thus strike the surface of the Earth.
What two factors cause planets and stars to be roughly spherical?
What two factors cause planets and stars to be roughly spherical? Radial gravitational attraction and the spin speed increasing over time.
How do impacts affect life in our solar system?
Impacts resurfaced planets and moons put water on the Moon and Mercury delivered materials needed by life to Earth and elsewhere and caused at least one mass extinction — and consequently the rise of mammals — on Earth.
Why does Earth have fewer impact craters than Mercury?
It is because earth has erosion effect due to atmosphere raining weather and water. There were impacts on earth by asteroids in early time of solar system formation. none of them exist now due to this erosion process.
Does Moon have water?
Does the Moon have gravity?
How many impact craters does the Moon have?
How does kinetic energy affect the size of a crater?
Thus crater diameter is proportional to the mass and velocity of the impactor. Based on the kinetic energy equation kinetic energy=1/2mv^2 velocity increases have more effect on a crater diameter than mass increases since velocity is squared.
How does diameter affect kinetic energy?
Kinetic energy depends on an object’s mass and its speed. … If two cylinders have the same mass but different diameters the one with a bigger diameter will have a bigger moment of inertia because its mass is more spread out.
How are craters formed physics?
An impact crater is a hole excavated out of a surface (e.g. a planet moon asteroid or comet) when a smaller mass moving at very high speed collides with it.
What are the main reasons there are so few impact craters on Earth compared to the Moon quizlet?
What are the main reasons there are so few impact craters on Earth compared to the Moon? Wind and water continually erode the surface Plate tectonics keep the surface of the Earth young Earth’s atmosphere causes small meteors to burn up before reaching the ground.
Why are impact craters rare on Earth?
There are two main reasons for the low number of craters. One is that our atmosphere burns up most meteoroids before they reach the surface. The other reason is that Earth’s surface is continually active and erases the marks of craters over time. The picture is the Barringer Meteorite Crater found in Arizona.
Why does Earth apparently have so few impact craters?
Why does Earth apparently have so few impact craters? Ancient impact craters are difficult to identify because they are commonly either eroded or filled with sedimentary deposits that are younger than the impact.
How large is an impact crater compared to the size of the impactor?
How large is an impact crater compared to the size of the impactor? 10 times larger.
Factors Affecting Impact Craters
Why Are Most Impact Craters Perfectly Circular? (Rather than Ovals)
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