| A | B |
|---|
| The structure of water is... | 2 Hydrogens, 1 Oxygen atom |
| Most common mineral in seawater | sodium chloride (NaCl) |
| Ocean water is saltiest where... | evaporation is high and freshwater mixing is low |
| The ocean layer of rapid temperature change with depth is found in the | thermocline |
| What is a wave? | visible evidence of energy passing through water |
| When do waves begin to increase in height and eventually crash? | when they interact with the ocean floor |
| What are ocean surface currents created by? | Friction with wind |
| What are acids? | Ionic compounds that release H+ ions when dissolved in water |
| What are bases? | Ionic compounds that release OH- ions when dissolved in water |
| Why is upwelling important? | it brings nutrients to the surface which starts the ocean food chain |
| The Coriolis effect | Causes surface currents to curve to the side |
| Density currents are created by | differences in ocean water density |
| What happens to the pH of ocean water as CO2 is added? | pH decreases |
| The order of seafloor features moving away from the shore | Shelf, slope, rise, abyssal plain |
| Deepest point in the ocean | trench |
| Why does water sink at the poles? | It is so cold and salty, an therefore dense. |
| pH of Ocean water | weak base (8.1) |
| How the salt got in the oceans | weathering of rocks on land over time & volcanic eruptions |
| Oceans in order from largest to smallest | Pacific, Atlantic, Indian, Arctic |
