Deck 35: The Origin of the Solar System

Question 1

The average time for an atom to decay is called its _________.

A) half-life
B) radioactive time delay
C) radioactive decay
D) radiation level

Answer 1

half-life

Question 2

Kant and Laplace proposed this theory of the Solar System formation: _____.

A) accretion theory
B) solar nebula theory
C) catastrophic theory
D) interstellar grain theory

Answer 2

solar nebula theory

Question 3

The solar system was born from

A) the capture of the planets by the Sun.
B) an immense interstellar cloud of gas and dust.
C) the collision of stars.
D) debris thrown off by the rotating Sun.

Answer 3

an immense interstellar cloud of gas and dust.

Question 4

The process of big particles sticking together is called __________.

Question 5

Dense materials sinking and light materials floating up cause ______ in the body.

Question 6

Meteorites are small chunks of asteroids that have landed on the Earth.

Question 7

One of the reasons that Mercury has little or no atmosphere is its small mass.