Admin Table of Contents
- 1 What are the factors that affect the craters size?
- 2 What causes large craters?
- 3 What are the factors that affect the size of an impact crater quizlet?
- 4 What are the three types of craters?
- 5 Why don’t we find a lot of impact craters on Earth?
- 6 Why have very old craters on the moon not been erased?
- 7 Does Earth have a lot of craters?
- 8 How many craters does the moon have?
- 9 How does the size of an impact crater affect the Earth?
- 10 How are mass and velocity related to crater size?
- 11 How are irregular craters different from degraded craters?
What are the factors that affect the craters size?
The size and shape of a crater depend on several factors:
- 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 causes large craters?
Craters produced by the collision of a meteorite with the Earth (or another planet or moon) are called impact craters. The high-speed impact of a large meteorite compresses, or forces downward, a wide area of rock. Most of the material falls around the rim of the newly formed crater. The Earth’s moon has many craters.
Why does Earth have so few craters compared to the moon?
The process of erosion uses weather, water, and plants to break down the ground on earth so that craters become virtually nothing. The Earth’s gravity is stronger than the moon’s, so it attracts more space debris than the moon does.
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.
What are the three types of craters?
There are three distinct crater types: simple craters, complex craters, and multi-ring basins (Fig. 6.1). The type of crater produced in an impact is dependent upon the size, density, and speed of the impactor, as well as the strength and gravitational field of the target.
How did the size of the balls affect the crater size?
The higher the ball’s starting point, the greater its velocity at impact. The greater an object’s velocity, the larger its impact crater. When dropped from a given height, the greater the mass, the larger the crater. When dropped from a given height, the greater the volume, the larger the crater.
Why don’t we find a lot of impact craters on Earth?
Why does the Moon have so many craters while Earth has so few? On Earth, impact craters are harder to recognize because of weathering and erosion of its surface. The Moon lacks water, an atmosphere, and tectonic activity, three forces that erode Earth’s surface and erase all but the most recent impacts.
Why have very old craters on the moon not been erased?
Why have very old craters in the moon not been erased as similar craters on earth have been? There are no erosion forces on the moon as there are on earth. 4- a solid rock crust formed over the outer surface of the moon.
Why there are no craters on Earth?
So why are there so few craters on Earth? NASA notes that Earth is equipped with three processes that eat up craters relatively quickly: erosion, tectonics, and volcanism. These forces leave only the largest scars from meteorites or asteroids — unlike, say, the moon, which can’t gobble up craters.
Does Earth have a lot of craters?
There are still many craters on Earth which are visible from space. Some craters in areas of low rainfall (i.e. where little erosion occurs) are relatively intact, such as this crater – Meteor Crater in Arizona, U.S.A. Meteor Crater in the Colorado Plateau, 73 km east of Flagstaff, Arizona.
How many craters does the moon have?
Scientists found more than 100,000 craters. Locations of just some of the new moon craters. A new study has found more than 109,000 previously unknown craters on the lunar surface.
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.
How does the size of an impact crater affect the Earth?
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. Typically, materials from space hit Earth at about 20 kilometers (slightly more than 12 miles) per second.
Crater size is related to the mass and velocity of the impacting body. Mass and velocity can be combined to find the kinetic energy of an impactor. Increasing either the mass or the velocity of the impactor increases the kinetic energy of the impact.
What can you observe from a graph of crater size?
Height or velocity is being held approximately constant. Graph the height from which the bolide is dropped vs. the crater diameter for objects of the same mass. What can you observe from your graph?
How are irregular craters different from degraded craters?
Irregular craters – Craters with irregular shapes or multiple impact craters formed at the same time. Oblong craters can be created by impacts striking the surface at a very low angle. Degraded craters – Craters that have become eroded due to weathering, lava flows, impacting, or downslope movement of material.