Earth's Features

Name:

Question 1: The diagram below represents Earth’s interior divided into four layers, each with unique properties. This model of Earth is based primarily on the

• study of ocean tides
• analysis of earthquake waves
• classifi cation of volcanic eruptions
• observation of meteor showers

Question 2: The map below shows a portion of Earth’s surface where two tectonic plates are located. The arrows indicate the direction of plate movement along the boundary between the two plates. If the African Plate and Arabian Plate continue to move in the directions the arrows indicate, the Red Sea will most likely become

• narrower because the two tectonic plates are coming together
• narrower because the two tectonic plates are moving apart
• wider because the two tectonic plates are coming together
• wider because the two tectonic plates are moving apart

Question 3: Base your answers to the question on the diagram below and on your knowledge of science. The diagram represents the inferred properties of Earth’s interior. As the depth below Earth’s surface increases, the average density of Earth’s interior

• decreases, only
• increases, only
• increases and decreases
• remains the same

Question 4: Which Earth layer contains convection currents that are believed to be responsible for the movement of Earth’s tectonic plates?

• lithosphere
• plastic mantle
• stiffer mantle
• outer core

Question 5: The table below shows some minerals, their chemical composition, and some characteristics of these minerals. What do the minerals hematite, limonite, and magnetite have in common?

• brown streak
• black streak
• contain hydrogen
• contain iron

Question 6: The map below shows a portion of Earth. The dots on the map represent areas of earthquake activity. In general, if Earth’s most active volcanic areas were indicated on the same map, where would these volcanic areas be located?

• at the North and South Poles
• mainly in the centers of the continents
• evenly distributed over Earth’s surface
• in the same areas as active earthquakes

Question 7: Base your answers to the question on the graphs below and on your knowledge of science. The graphs show some selected properties of Earth’s atmosphere. Identify the air temperature at the stratopause and the mesopause. Stratopause _____________ °C Mesopause _____________ °C

Question 8: State the general relationship between water vapor concentration and altitude within the troposphere.

Question 9: Base your answers to the question on the diagrams below and on your knowledge of science. The diagrams, labeled A through C, represent enlarged sections of three different types of tectonic plate boundaries. Complete the chart below by writing the main type of plate motion represented by the arrows in diagrams A, B, and C. Write the following in your answer: Letter A is Letter B is Letter C is