If radioactive elements had not been present in early planetesimals, what would have been the most likely impact on the process of Earth’s internal differentiation?

Let’s look at subduction zones in more detail. Label the different parts of the subduction zone using the terms below.

Which of the following statements accurately describe the thermal and pressure conditions inside the Earth? (Select all that apply.)

Which of the following best explains why terrestrial planets formed closer to the Sun, while gas giants formed farther away?

Why does the geothermal gradient vary at different depths inside the Earth?

  A cation is a positively charged ion. An anion is a negatively charged ion. Below are six common mineral-forming cations and anions. Match / identify each ion into the correct grouping.

In a thunderstorm, electrons jump from tiny ice crystals to larger hailstones. This creates a charge separation between positively and negatively charged parts of a storm cloud. Lightning is produced when the electrostatic potential becomes strong enough to surge across a large expanse of insulating air. Click on the part of the storm cloud that will become negatively charged.

  Silicates are the most common rock-forming minerals on Earth. All silicate minerals include the silica tetrahedron (pictured below). Label the ball and stick model with the correct elements that form the silica tetrahedron. You may need to use some labels more than once

Which of the following statements accurately distinguish between minerals, melts, and metals? (Select all that apply.)

Using bathymetry, it is possible to identify long lines of islands and seamounts that appear to trail from the hot spot that is currently under the island of Hawaii. Watch the video and then answer the following question. Hot Spots and Islands of Hawaii If the Emperor seamounts were formed by hot spot eruptions 70 million years ago and Hawaii was formed by modern eruptions, which way has the Pacific Plate moved? Remember that hot spots remain stationary while the plate moves over them, creating the island chains.