Page 4 - Reading Success B9

Reading Questions

Choose the best answer.

1. Which of the following is true about the recently discovered extra solar

planet?
a. It has approximately the same density as Saturn.
b. It is almost as large as Earth.
c. It has a solid core.

d. It proves gravitational instability theory.

2. According to core accretion theory what happens first in a planet’s
formation?

a. Small cores of rock and ice slowly grow.
b. Disks of dust collapse and merge through gravity.
c. Large cores begin to collect a gas envelope.

d. Multiple clusters of dust merge into larger clusters of dust.

3. What has caused core accretion theory to gain support?
a. new data concerning Saturn’s core

b. the discovery of a new extra solar planet
c. the discovery of a new extremely large comet
d. new data concerning Earth’s core

4. Compared to Saturn the newly discovered extra solar planet

a. is much more massive
b. is much less massive
c. has a much larger diameter
d. has a much smaller diameter

5. Predict which of the following would most likely give the most support to
core accretion theory.
a. The discovery of a core of rock and ice just beginning to acquire a gas envelope.

b. The discovery of a new extra solar planet much more massive than any other
known extra solar planet.
c. The discovery of multiple clumps of dust collapsing into each other.

d. none of the above

6. In this passage the word disk means
a. a device for storing data

b. a flat object that is thrown for sport
c. any surface that is flat and round
d. a section of the spine
unit 1_7