Exam 4: The Habitability of Earth

Limestone is a common type of

Which of the following statements correctly describe the word geology?

The extent of thermal escape in a planetary atmosphere is dependent

Transfer of heat in the Earth's mantle is dominated by

In which eon of Earth's history did life originate?

Most of the Earth's carbon dioxide

During the Hadean Eon, life

How many sterilizing impacts have occurred on the Earth since the heavy bombardment?

In which eon of Earth's history did dinosaurs and mammals first appear?

Which of the following processes is believed to have been an important source of the Earth's atmosphere?

The radioactive isotope ⁷Be (atomic number 4) decays to the isotope ⁷Li (atomic number 3). What type of radioactive decay is this?

When an igneous rock is eroded and then becomes deposited at the bottom of an ocean it turns into

The radioactive isotope ²²⁶Ra (atomic number 88) decays to the isotope ²²²Rn (atomic number 86). What type of radioactive decay is this?

Which type of rock is the easiest to date radiometrically?

What do we mean by the half-life of a radioactive isotope?

The composition of the early atmosphere of the Earth was dominated by

At the start of which eon of Earth's history do we find the earliest evidence of life?

The method of dating the ages of rock and fossils using isotopic abundances is referred to as

An estimate of the minimum age of the solar system can made by measuring the ages of

Without the greenhouse effect, the oceans on the Earth's surface would