Tingkatan 3

The asteroids between the orbits of Mars and Jupiter were once a planet. O True False

laiz [17]

Answer:

False

Explanation:

In the vast majority of cases, the asteroid's orbit is between those of Mars and Jupiter, more precisely between 2 and 3.5 astronomical units, in what was called the asteroid belt.

The size of these objects varies between several hundred kilometers, for some rare specimens such as Ceres, and a value of the order of 10 meters (under this maximum limit we will talk about meteoroid). They are irregularly shaped bodies made up of rocks and metals like telluric planets.

The first hypothesis regarding the origin of the asteroids was the explosion of a planet located between Mars and Jupiter, of which these small bodies would be the residue. This idea has, however, been abandoned, because the total mass of the asteroids would allow to reconstruct only a very small planet, with a diameter just half that of the Moon.

Today planetologists think that asteroids are bodies that failed to agglomerate to form a planet because of Jupiter's influence.

An indication in favor of this theory is the presence of holes in the distribution of the asteroids belt orbits. Indeed, the orbits where the period of revolution would be equal to a simple fraction of that of Jupiter, for example, half or third, are empty.

Such a phenomenon can only occur if there is regular accumulation of an identical force over a very long period, therefore, if the period of the object and that of Jupiter are in a simple relationship, for example, half. It is this phenomenon, called resonance, that explains the holes in the current distribution of asteroid orbits.

It is the phenomenon of resonance probably responsible for the absence of a fifth telluric planet between Mars and Jupiter. Indeed, planets were formed 4.6 billion years ago by the agglomeration of dust in small bodies called planetesimals, which in turn regrouped to form massive bodies.

7 0

2 years ago

In a class of 20 students, what democratic form of governance makes the most sense

Lelechka [254]

I need the answers plzz

6 0

2 years ago

Each of the following statements applies either to the formation of terrestrial planets or of jovian planets (but not both), bas

ryzh [129]

This question is incomplete. Here is the complete question:

Each of the following statements applies either to the formation of terrestrial planets or of jovian planets (but not both), based on our current theory of solar system formation. Drag the statements into the appropriate bin:

-accreted from planetesimals of rock and metal .

-surfaces dramatically altered during the heavy bombardment

-large moons formed in surrounding disks of material

-ejected icy planetesimals that are now Oort cloud comets

-formed in a region of the solar system with lower orbital speeds

-accreted from icy planetesimals

-formed in regions cold enough for water to freeze

Answer:

The correct answers are:

Terrestrial planets: -accreted from planetesimals of rock and metal , -surfaces dramatically altered during the heavy bombardment

Jovian Planets: -large moons formed in surrounding disks of material , -ejected icy planetesimals that are now Oort cloud comets , -formed in a region of the solar system with lower orbital speeds , -accreted from

icy planetesimals , -formed in regions cold enough for water to freeze.

Explanation:

The terrestrial planets, are those planets that have similar characteristics to the planet Earth.

They have a core of extremely hot and liquid material and a hard surface composed of rocks and metal.

They also have surfaces dramatically altered during the heavy bombardment, which causes craters to appear on the surfaces of these planets.

The planets that are known as terrestrial within our Solar system are Mercury, Venus, Earth and Mars.

Jovian Planets are those that differ completely from terrestrial planets. The water, ammonia and methane that they possess have frozen due to the distance between them and the Sun.

The planets with these characteristics are Jupiter, Saturn, Uranus and Neptune.

They are giant planets that are characterized by having a lot of gas, with Jupiter being the largest of them.

Unlike terrestrial planets, they do not have a surface.

6 0

2 years ago

what physical feature connects the different regions of the southern grassland countries of South America

8090 [49]

the grasslands of South America are a low plain, not mountainous or rain forest

4 0

2 years ago

Glaciers have sculpted mountains and carved out valleys but no longer flow and shape of the landscape today. true or false

kvasek [131]

The correct answer is - false.

Glaciers have sculpted mountains, carved out valleys, made lots of glacial relief structures, and created thousands of glacial lakes over the past, but this process continues nowadays too. Even though in the present we only have glaciers at limited small parts of the planet, they are still active, and are doing their job in the formation of glacial relief forms. Lots of people tend to thing that the glaciers were only doing this in the past, but this is because they are very rare nowadays, and are shadowed by the more dominant factors in an inter-glacial period like we have at the moment.

4 0

2 years ago

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