Earth's Interior, Continental Drift and Sea-Floor Spreading

The outer and inner core are made up of:  

Most scientists of Alfred Wegener's time rejected his hypothesis because:  

Which best describes the Earth's core?  

How does sea-floor spreading occur?  

When you remove heat from a convection current, it will..........

The outermost layers of the Earth (crust) and the top part of the mantle is referred to as the 

What is the only real liquid, iron rich layer of the Earth? 

Why is the inner core solid - but the outer core is a liquid?  

Fossils of tropical plants were found in Antarctica because:  

Which of the following is the best evidence that the continents were connected?  

How do scientists study the Earth's interior?  

What is the largest layer, contains convection currents and is located above the outer core? 

The newest rocks on Earth are found were?  

What was Alfred Wegener's hypothesis of continental drift:  

The youngest rocks on Earth's surface are found:  

The Earth's layers are classified by:  

What happens to the temperature of the Earth as you move from the inner core to the crust? 

In the process of sea-floor spreading, where does molten material rise from the mantle & erupt?

As you move from the Earth's crust to the inner core, temperature and pressure:  

What is the most dense crust on Earth?  

When hot material rises and colder material sinks, it is known as a:  

Convection currents that help move the plates on Earth are found where?