Which of the following is least reasonable regarding impact craters? Group of answer choices 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.   Craters are most often are circular but more elongate craters can be produced with impactors striking the surface at very low angles.   The Moon has more craters than the Earth because of its strong tidal force on the impactors.   Objects from space typically hit Earth at about 20 km/s ande produce craters that can be approximately 20 times larger in diameter than the impacting objects.   The faster the incoming impactor, the larger the crater.

15) Why is heat flow the key to understanding a planet's surface activity?

d) The internal density of the comet 67P was measured by the Rosetta space-craft to be approximately p = 400 kg m-³. How close an approach to the Earth could be made by this comet before it is tidally disrupted? Express your answer in units of the Earth's radius. Ignoring the effects of heating and sublimation, state how close this comet could approach the Sun without being tidally disrupted. Express your answer in units of the Solar radius.

A lot of asteroid and comet dust collides with Earth's atmosphere everyday. Assume that 500 tons of mass is added to Earth daily from the millions of meteors that enter our atmosphere. Estimate the time it would take for the Earth's mass to increase 0.2% with this impact rate. Is this mass accumulation significant to Earth as a planet.

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Scientists find evidence of a large meteor impact on the coast of the YucatánPeninsula in Mexico. What can the scientists most likely expect to find in the layers of rock that are about the same age as the impact?A. evidence of the mass extinction of many speciesB. evidence of a gradual change of one species over timeC. evidence of a rapid change in one speciesD. evidence of the stability of many species over time

A meteor with a lengthy history is what?

You may enter answers in scientific notation as shown: 1,23 x 10 = 1.23e5 Fill out each quantity for the interaction between the sun and the asteroid: asteroid data mass: 7,93 x 102ºkg radius: 5.15 x 10?m F = unit G = earth data mass; 5.97 x 1024kg radius: 6.37 x 10m unit M = unit m = unit 8.1 x 1011m r = unit 1.50 x 1011m What is the force between the asteroid and the sun? sun data mass: 1.99 x 1030kg unit radius: 6.96 x 108m finalize check answers cannot be determined (after completing ALL problems) Unit 11: universal gravitation, gravitational force problems Desmos Scientific Online Calculator O11 24 96 & 6.

You may enter answers in scientific notation as shown: 1.23 x 105 = 1.23e5 Fill out each quantity for the interaction between the sun and the asteroid: asteroid data mass: 7,93 x 1020kg radius: 5.15 x 10?m F = N. earth data mass: 5.97 x 1024kg radius: 6.37 x 10m G = M = unit m = unit 8.1 x 1011m unit 1.50 x 1011m What is the force between the asteroid and the sun? sun data mass: 1.99 x 1030kg radius: 6.96 x 108m N check answers cannot be determined Unit 11: universal gravitation, gravitational force problems Desmos Scientific Online Calculator