[Ocean and Coastal Processes ] Just east of Long Beach is an inlet near Point Lookout. This is an important shipping channel. What structure would you want to install along this inlet to prevent sediments from getting deposited in the channel?

[Volcanic Hazards] There are no towns near the Laki craters, but there is a cell tower on a nearby ridge and a hydroelectric plant within the Skaftá River Gorge. While explosive volcanic hazards like ashfall are not impacted by topography at all, lava flows are significantly influenced by topography. Lava, like water, tends to follow the path of least resistance. This usually means flowing downhill. Which of the two pieces of infrastructure is at greater risk from lava flows if Laki were to have another large eruption?  

 [Minerals] When a magma cools, minerals crystallize in a predictable manner. We call this Bowen’s reaction series. You can read about this topic in your text if it is new to you. Place each of the minerals in its correct location within the template provided.

[Volcanic Hazards] In the animation below, watch the Introduction. Then click on Topics, and select Partial Melting. You will see what a rock looks like through a microscope. The individual crystals are different materials. Set the green bar on the left to 800°F (just above low temperature). Then, click the Migrate Magma button. Use the information you gather to answer the next five questions. Lava Composition What is the composition of the melt that has been mobilized?

[Volcanic Hazards] Temperature influences the viscosity of many materials. Would you expect a high-temperature magma to be more or less viscous than a lower temperature magma?  

[Winds, Fronts, and Cyclones] High- and low-pressure systems strongly affect when and where winds blow. Read each description and select whether it is describing a high- or low-pressure system.  

 [Minerals] 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.

[Plate Tectonics] In the animation below, select the “Topics” menu, and then select “Hot Spots.” Watch the animation on hot spots Hot Spot Formations Based on the description of hot spots provided in the video, select the oldest volcano in the chain of islands pictured below.

[Volcanic Hazards] During gradual heating of a rock, which type of minerals melts first?

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