Exam 15: The Origin of the Solar System

After the first solid grains formed in our solar system, these particles could then grow by the process of ____________, the collision and sticking of one particle with another to continue the formation of planetesimals. Each of these has many atoms or molecules.

What observation made of other stars seems to suggest the solar nebula theory is correct

If a star is found with five planets orbiting it, and a process like that described in the solar nebula theory formed the planets, which of the planets would be expected to have the greatest uncompressed density

Describe some characteristics that the terrestrial planets have in common. Use the solar nebula theory to explain the commonality.

The Jovian problem refers to

Evolutionary hypotheses suggest that planets form by natural and gradual processes.

-After 3 half-lives, what percent of the original radioactive atoms are still in the sample as shown in the graph above

The iron in our solar system was created from smaller-mass atomic nuclei in

One common technique used to discover the presence of an extrasolar planet around a star is to detect how they tug their stars about, creating small Doppler shifts in the stars' spectra.

Jovian worlds that orbit close to their host stars are called ____________.

A(n) ____________ is a solar-system object that enters Earth's atmosphere and becomes very hot due to friction between the object and Earth's atmosphere and does not survive to reach the surface.

Using the above photo only, the solar wind is moving parallel to the comet.

The hydrogen in our solar system was created from subatomic particles in

The asteroid belt is found between which two planets' orbits

A future news release might report that a new planet has been found around a star very similar to our Sun. The system contains other planets as well like our solar system. This newly discovered planet is claimed to have a mass 40 times that of Earth and is located nearly 25 AU from the star it orbits. Which of the following would be a reasonable prediction about this planet, assuming it formed like our solar system I.The planet will probably have a mean density of around 5 g/cm3. II.The planet will probably have a radius of around five to ten times greater than Earth's. III.The planet will probably have several satellites. IV.The planet will probably have a composition that is mostly hydrogen and helium.

The present motions of the planets were inherited from the rotation of the solar nebula.

Comets are rocky bodies that orbit the Sun beyond the orbit of Neptune.

The large planetesimals would have grown faster than the smaller planetesimals because

The age of the solar system is believed to be approximately 4.6 billion years based on the data from

Terrestrials are small, rocky, and dense.