Exam 4: The Habitability of Earth

Geological eras are subdivided into

Most of the craters on the highlands of the Moon were formed

What do we mean by the "fossil record"?

Even though Venus is almost the same size as the Earth it does not have plate tectonics. This is most likely because

Compared to oceanic crust, continental crust is

The currently accepted theory for the formation of the Moon is the

A radioactive isotope with an atomic number of 92 undergoes alpha decay. What is the atomic number of the daughter nucleus?

Within the last two and a half billion years, how many snowball Earth events have occurred?

One observation that suggests that the Earth has a dense central core is that

What is the most important role that the carbon dioxide cycle plays in the regulation of the Earth's climate?

When a sedimentary rock is melted and then re-solidifies it turns into

Which of the following gases was present in the smallest amounts in early atmosphere of the Earth?

Another name for the Earth's crust is the

In which type of radioactive decay does the atomic number of the parent nucleus change?

A radioactive isotope with an atomic number of 37 undergoes electron capture. What is the atomic number of the daughter nucleus?

In radioactive decay, the changed nucleus after decay is referred to as the

The division of the geological history of the Earth into sets of distinct intervals is referred to as the geological

In electron capture,

What do we currently believe was the main source of the Earth's oceans and atmosphere?

Fossils are found