Chapter 2 - The Earth In Space Flashcards
The planet of Saturn is the \_\_\_\_\_\_\_ farthest from the Sun. A) 4th B) 5th C) 6th D) 7th E) 8th
C) 6th
The asthenosphere is: A) Composed of Fe and Ni B) In Earth's lower mantle C) Part of the Earth's core D) The strongest part of the mantle E) A zone of weak rock within the upper mantle
B) In Earth’s lower mantle
The Greenhouse Effect is thought to be controlled mainly by the amount of which of the following gases in Earth's atmosphere (or that of any planet probably)? A) Carbon dioxide (CO2) B) Sulphur dioxide (SO2) C) Nitrogen (N) D) Oxygen (O2) E) Acid rain
A) Carbon dioxide (CO2)
The largest of the "rocky" or terrestrial planets is \_\_\_\_\_\_\_. A) Mars B) Jupiter C) Earth D) Pluto E) Venus
C) Earth
The very first stars in the history of our Universe would have differed from our sun (Sol) in that _______.
A) They were smaller and contained no hydrogen and helium
B) They were smaller and contained little except hydrogen and helium
C) They were larger and contained no hydrogen or helium
D) They were larger and contained little except hydrogen and helium
E) There was no difference - they were the same as modern Suns such as Sol
D) They were larger and contained little except hydrogen and helium
Small bodies of rock or metal that orbit Sol are called \_\_\_\_\_\_\_. A) Comets B) Asteroids C) Moons D) Protoplanets E) Space invaders
B) Asteroids
Objects made of a mixture of ice and rock that orbit Sol are called \_\_\_\_\_\_\_. A) Comets B) Asteroids C) Moons D) Protoplanets E) Space invaders
A) Comets
Modern astronomy indicates that the Big-Bang occurred about \_\_\_\_\_\_\_. A) 14 Ga B) 1.4 Ga C) 14 Ma D) 1.4 Ma E) 1.4 Ka
A) 14 Ga
One of the most important processes to take place after the Big-Bang and before the formation of our solar system was _______.
A) The melting of rocks inside large Suns
B) The fission of atoms inside large Suns
C) The fusion of atoms inside large Suns
D) Volcanism on millions of planets
E) Orogeny on the planets surrounding large Suns
C) The fusion of atoms inside large Suns
The most common type of meteorite (by far) is what is called ‘an ordinary chondrite’. One reason why their study is important to us is that:
A) They seem to have the same chemical composition as Earth’s crust
B) They seem to have the same chemical composition as Earth’s mantle
C) They seem to have the same chemical composition as Earth’s core
D) They seem to have the same chemical composition as Earth overall
E) All of the above statements are false and the study of meteorites is nothing more than a novelty
D) They seem to have the same chemical composition as Earth overall
The smallest of the "rocky" or terrestrial planets is \_\_\_\_\_\_\_. A) Mars B) Jupiter C) Earth D) Pluto E) Mercury
E) Mercury
Stars form by the colliding of millions of bits of matter, this involves mainly the process(es) called \_\_\_\_\_\_\_. A) Condensation and accretion B) Differentiation C) Aggregation D) Accumulation E) Nuclear fusion
A) Condensation and accretion
Asteroids and comets in our solar system are bodies that result from _________.
A) The desegregation of planets much like Earth
B) The desegregation of planets much like Jupiter
C) Objects that never become large enough to be planets
D) Objects that were “stolen” form other stars
E) A combination of ‘a’ and ‘b’
C) Objects that never become large enough to be planets
A primitive meteorite is one that _______.
A) Was found a long time ago
B) Fell a long time ago but found only recently
C) Contains mostly iron
D) Left the asteroid belt a long time ago
E) Was derived from an undifferentiated asteroid
E) Was derived from an undifferentiated asteroid
The Oort Cloud and the Kuiper belt are inhabited mainly by \_\_\_\_\_\_\_. A) Small planets B) Exoplanets C) Comets D) Asteroids E) Stranded "Star Trekkers"
C) Comets
