Name: _____________________
Pd. ________
ESS Unit 1 - Review
Base your answers to questions 1 through 3 on the diagram below, which represents a
north polar view of Earth on a specific day of the year. Solar times at selected longitude
lines are shown. Letter A represents a location on Earth's surface.
1. How many hours of daylight would an observer at location A experience on this day?
2. State the altitude of Polaris as seen by an observer at the North Pole.
3. How many degrees apart are the longitude lines shown in the diagram?
Lee
4. Base your answer to the following question on the map and passage below. The map
shows the outlines and ages of several calderas created as a result of volcanic activity
over the last 16 million years as the North American Plate moved over the Yellowstone
Hot Spot. A and B represent locations within the calderas.
The Yellowstone Hot Spot
The Yellowstone Hot Spot has interacted with the North American
Plate, causing widespread outpourings of basalt that buried about 200,000
square miles under layers of lava flows that are a half mile or more thick.
Some of the basaltic magma produced by the hot spot accumulates near the
base of the plate, where it melts the crust above. The melted crust, in turn,
rises closer to the surface to form large reservoirs of potentially explosive
rhyolite magma. Catastrophic eruptions have partly emptied some of these
reservoirs, causing their roofs to collapse. The resulting craters, some of
which are more than 30 miles across, are known as volcanic calderas.
The Yellowstone Hot Spot
Calculate, in miles per million years, the rate at which the North American Plate has
moved over the Yellowstone Hot Spot between point A and point B.
Lee
Base your answers to questions 5 and 6 on passage and time zones map shown below.
Time Zones
In 1883, Earth was divided into 24 time zones. The United States (excluding
Alaska and Hawaii) has four time zones, which are indicated by different shadings
on the map.Each zone is roughly centered on lines of longitude that are 15° apart.
These lines are shown as dashed lines on the map. Most locations within a time zone
have the same time.This time is called standard time. As you move to the west, the
time in each zone is one hour earlier than the previous time zone
5. Explain, in terms of Earth’s rotation, why the time zones are 15° of longitude apart.
6. When it is 1 a.m. in New York City, what time is it in Denver?
Lee
Base your answers to questions 7 and 8 on the map below, which shows the generalized
surface bedrock for a portion of New York State that appears in the Earth Science
Reference Tables.
7. State the longitude of Mt. Marcy, New York, to the nearest degree. The units and
compass direction must be included in your answer.
8. Place an X on the map to represent a location in the Tug Hill Plateau landscape region.
Lee
Base your answers to questions 9 and 10 on the diagram in your answer booklet, which
shows the latitude-longitude grid on a model of Earth. Point Y is a location on Earth’s
surface.
9. What is Earth’s rate of rotation at point Y, in degrees per hour?
10. On the diagram, place an X at 15° S 30° W.
Lee