which of the following statements best describes the size of the largest asteroid, ceres?

# which of the following statements best describes the size of the largest asteroid, ceres?

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Asked by 2 years ago
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Which of the following statements best describes the size of the largest asteroid, Ceres?It is a little less than half the diameter of our Moon.
If we could put all the asteroids together, their total mass would be ______.much less than the mass of any terrestrial planet
Why didn't a planet form where the asteroid belt is now located?Gravitational tugs from Jupiter prevented material from collecting together to form a planet.
Gaps in the asteroid belt (often called Kirkwood gaps) are caused by ______.orbital resonances with Jupiter
When you see the bright flash of a meteor, what are you actually seeing?the glow from a pea-size particle and the surrounding air as the particle burns up in our atmosphere
How can we determine the reflectivity of an asteroid?By comparing its brightness in visible light to its brightness in infrared light.
In science fiction movies, spaceships are often shown dodging through large numbers of closely spaced, boulder-size objects. Which of the following real things in our solar system would look most like such science fiction dangers?the rings of Saturn
Suppose you find a meteorite made almost entirely of metal. According to current science, which of the following statements must be true?Your meteorite is a fragment from the core of a large asteroid that shattered in a collision.
Which of the following objects are probably not located in the same region of the solar system in which they originally formed?Oort cloud comets
Suppose there were no solar wind. How would the appearance of a comet in our inner solar system be different?It would have only one tail instead of two.
Suppose we discover a new comet on an orbit that brings it closer to the Sun than Mercury every 125 years. What can we conclude?It has been on its current orbit for only a very short time compared to the age of our solar system.
When we see a meteor shower, it means that _________.Earth is crossing the orbit of a comet
Which of the following is not a piece of evidence supporting the idea that an impact caused the mass extinction that occurred 65 million years ago?Fossilized dinosaur bones contain fragments of rock from the impact.
Suppose that large jovian planets had never formed in our solar system. Which of the following would most likely be true?Neither the asteroid belt nor Oort cloud would exist.
Which of the following statements is not true?Objects in the Kuiper belt are made mostly of rock and metal.
A rock found on Earth that crashed down from space is called ______.a meteorite
The asteroid belt is located ______.between the orbits of Mars and Jupiter
Which statement about asteroids is not true?If we could put all the asteroids together, they would make an object about the size of Earth.
A typical meteor is created by a particle about the size of a _________.pea
What do we mean by a primitive meteorite?a meteorite that is essentially unchanged since it first condensed and accreted in the solar nebula some 4.6 billion years ago
Among discovered meteorites, we have found some with all the following origins except _________.being a fragment from Comet Halley
Which statement is not thought to be true of all comets in our solar system?Comets always have tails.
Which direction do a comet's dust and plasma tails point?generally away from the Sun
When a comet passes near the Sun, part of it takes on the appearance of a large, bright ball from which the tail extends. This part is called _____.the coma
The total number of comets orbiting the Sun is estimated to be about ______.1 trillion
Halley's comet is named after the English scientist Edmund Halley (1656--1742) because ______.he calculated its orbit and predicted the year in which it would next be seen.
What was the Shoemaker-Levy 9 impact?the 1994 impact of a chain of comet fragments into Jupiter
What do we mean by a mass extinction?the extinction of a large fraction of the world's plant and animal species in a relatively short period of time
If the hypothesis tracing the extinction of the dinosaurs to an impact is correct, the dinosaurs died off largely because ______.of global climate effects initiated by dust and smoke that entered the atmosphere after the impact
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