Question

1. an early stage of forming the solar system is described by

a. the solar collision theory
b. the solar corona hypothesis
c. the solar nebula hypothesis
d. the dust cloud collapse theory
e. the oort cloud nebula theory

1. a meteor shower is named for

a. the comet from which it comes
b. an asteroid from which it comes
c. the constellation from which it appears to come
d. the meteor from which it comes
e. none of the above

1. amino acids have been found on

a. meteorites
b. europa
c. mars
d. saturn
e. none of the above

1. a problem with very high speed (near the speed of light) travel between stars is

a. many people have trouble sleeping when travelling at such high speed
b. the spacecraft would be destroyed by hitting a small pebble.
c. time speeds up too much for the travelers, making them age quickly
d. special foods would need to be eaten to remain healthy
e. vibration of the spacecraft sometimes becomes a problem at such speeds.

1. the time it would take current spacecraft to reach nearby stars is roughly

a. 100 years
b. 1000 years
c. 100,000 years
d. 10,000,000 years
e. 1,000,000,000 years

1. the asteroid belt primarily consists of

a. objects that orbit the sun between earth and mars
b. objects that orbit the sun between mars and jupiter
c. objects that orbit the sun between jupiter and saturn
d. objects that orbit the sun between uranus and neptune
e. none of the above

Explanation:

• Question 24: The Solar Nebula Hypothesis describes an early - stage of the formation of the Solar System. It posits that the Solar System formed from a rotating cloud of gas and dust called a nebula.
• Question 25: A meteor shower is named for the constellation from which it appears to radiate. As Earth passes through a trail of debris left by a comet or asteroid, meteors seem to come from a particular point in the sky associated with a constellation.
• Question 26: Amino acids, the building - blocks of life, have been found on meteorites. This discovery has implications for the origin of life and the possibility of life elsewhere in the universe.
• Question 27: At very high speeds (near the speed of light), a small pebble can cause significant damage to a spacecraft due to the high - energy impact. The kinetic energy of an object increases with its speed, and at relativistic speeds, even small objects can have a large amount of energy.
• Question 28: Current spacecraft have relatively low speeds compared to the vast distances between stars. It would take roughly 100,000 years for current spacecraft to reach nearby stars.
• Question 29: The asteroid belt is located between the orbits of Mars and Jupiter and consists of numerous small rocky and metallic objects that orbit the Sun.

Answer:

• 24. C. the Solar Nebula Hypothesis
• 25. C. the constellation from which it appears to come
• 26. A. meteorites
• 27. B. the spacecraft would be destroyed by hitting a small pebble
• 28. C. 100,000 years
• 29. B. objects that orbit the Sun between Mars and Jupiter