__________ was the most abundant element that formed shortly after the Big Bang.

The main strength of Alfred Wegener’s hypothesis of continental drift was the many observations indicating that the continents were joined together at some point in Earth’s past. Which of the following was a piece of evidence that Alfred Wegener used? Select all that apply.

The Jovian planets formed in the outer portion of the solar system where volatiles such as water could condense to ice, allowing these planets to collect a greater proportion of ices and gases. 

A theory is an untested idea used to explain observations.

Remember that water at 4º C has a density of 1 g/cm3. Would the substance from the previous question sink or float if placed in a glass of water? Note: I will double check this question and grade it based on the density you determined in the previous question.

Which of the following is the densest?

Which of the following is an example of a biochemical sedimentary rock?

What scale is used to rank earthquakes based on intensity?

Clay-sized grains are transported as __________ in a river.

What event do geologists use to define the boundary between the Precambrian and Cambrian?