IDS 102

Study Guide for Exam 2

Seasons:

Know what causes season on Earth,

Know the position & orientation of Earth is at different seasons.

Know how seasons change as the tilt of a planet changes

Light & the Electromagnetic Spectrum:

Know the relationship between wavelength, frequency, & energy

Know the difference parts of the electromagnetic spectrum and how they range from highest to lowest energy/ longest to shortest avelength

Know the meaning of emission, intensity, transmission, absorption, and reflection

Climate & Greenhouse effect:

Be able to describe the greenhouse effect and..

What is albedo?

How have atmospheric CO2 levels changed and what evidence supports this?

How global temperatures changed and what evidence supports this?

How are global conditions predicted to change in the future and what will be the major effects of changing climate on the global scale?

How are climatic conditions predicted to change in Washington State and how will they change life here in Washington State?

Geologic Time:

Know the age of the Earth,

Order of major geology & evolutionary events

Note: you should know when animals evolved, but do not need to worry about when the different types of animals evolved (for example reptiles vs. mammals).

Geologic Materials & Processes

Know how the different types of rocks are formed (Igneous, Metamorphic, & Sedimentary)

Know how the crystal size of igneous rocks related to cooling history

Know the how the terms “mafic,” “felsic,” and “intermediate” relate to the silica content of a magma/lava relates to color of a rock and the type of volcano formed.

Know what the 2 major types of volcanoes are and what type of eruptions are most common at each.

Know how to classify the end-member types of igneous rocks (basalt, granite, gabbro, & rhyolite)

Be able to describe the different type of plate boundaries: Convergent, Divergent, & Transform

Know what the motion is at each type of boundary and which ones are associated with earthquakes & volcanoes.

Remember to look at your quizzes and the end of module/concept review questions.

Additional Practice Question

Planet Steve has an orbit in which the northern hemisphere is always pointed toward the sun, but the axis of rotation is tilted at 23.5 degrees from vertical. The orbit is perfectly circular and the picture below is a side-on view of the orbit. The planet spins once every 24 hours. See the diagram below.


a. Will Planet Steve have seasons? Explain your logic

b. Will Planet Steve have day and night? Explain your logic.

c. How will the intensity vary over the course of a day for a city on the equator? Sketch a graph showing qualitatively how the intensity will vary over the course of two days and nights.

d. How many hours of daylight will the North Pole on this planet have?

2) Complete the tables below by filling in the blanks with the names of rocks

Chemical Composition of Rock
Amount of Silica
(circle one) / High
Intermediate
Low / High
Intermediate
Low / High
Intermediate
Low
Names of rocks with
Intrusive Texture
Names of rocks with
Extrusive Texture
Geologic term for chemical composition / mafic / intermediate / felsic
Type of Volcano formed
Explosive eruptions
(circle one) / Common
Rare / Common
Rare / Common
Rare