Enter keycode  
   
   


1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30 
Chapter 1: Earth as a System

 

How Are Earth's Spheres Interacting?
Keycode: ES0103

 

 

How Do Interactions among Earth's Spheres Vary Regionally?
Keycode: ES0108

Back to top
Chapter 2: The Nature of Science

 

How Might a Scientist Investigate Annual Patterns of Fires?
Keycode: ES0201

 

 

How Might You Investigate Scientific Phenomena?
Keycode: ES0205

Back to top
Chapter 3: Models of Earth

 

How Do Map Projections Distort Earth's Surface?
Keycode: ES0301

 

How Are Landforms Represented on Flat Maps?
Keycode: ES0307

 

 

How Do Latitude and Longitude Coordinates Help Us See Patterns on Earth?
Keycode: ES0303

Back to top
Unit 1: Investigating Earth

 

How Can Getting Farther Away from Earth Help Us See It More Clearly?
Keycode: ESU101

 
Back to top
Chapter 4: Earth's Structure and Motion

 

How Do We Know about Layers Deep within Earth?
Keycode: ES0402

 

 

What Time Is It?
Keycode: ES0405

Back to top
Chapter 5: Atoms to Minerals

 

How Many Protons, Neutrons, and Electrons Are in Common Elements?
Keycode: ES0501

 

 

How Do Crystals Grow?
Keycode: ES0506

Back to top
Chapter 6: Rocks

 

How Do Rocks Undergo Change?
Keycode: ES0602

 

What Kind of Rock Is This?
Keycode: ES0610

 

 

How Do Igneous Rocks Form?
Keycode: ES0603

Back to top
Chapter 7: Resources and the Environment

 

What Happens When an Oil Spill Occurs?
Keycode: ES0703

 

What Environmental Changes Can We See with Satellites?
Keycode: ES0707

 

 

Why Is This Place Protected?
Keycode: ES0705

Back to top
Unit 2: Earth's Matter

 

Paper or Plastic—Which Type of Bag Is Better for the Environment?
Keycode: ESU201

 
Back to top
Chapter 8: Plate Tectonics

 

What Is Earth's Crust Like?
Keycode: ES0801

 

How Fast Do Plates Move?
Keycode: ES0810

 

 

How Old Is the Atlantic Ocean?
Keycode: ES0802

Back to top
Chapter 9: Volcanoes

 

How Are Volcanoes Related to Plate Tectonics?
Keycode: ES0901

 

Is It Safe to Live Near a Volcano?
Keycode: ES0907

 

 

How Fast Do Gases from Volcanic Eruptions Travel?
Keycode: ES0906

Back to top
Chapter 10: Earthquakes

 

How Are Earthquakes Related to Plate Tectonics?
Keycode: ES1001

 

Which Fault Moved in the Northridge Earthquake?
Keycode: ES1010

 

 

Where Was That Earthquake?
Keycode: ES1003

Back to top
Chapter 11: Mountain Building

 

How Are Mountains Related to Plate Tectonics?
Keycode: ES1101

 

What Forces Created These Geologic Features?
Keycode: ES1106

 

 

How Do Rocks Respond to Stress?
Keycode: ES1102

Back to top
Unit 3: Dynamic Earth

 

How Can One Volcano Change the World?
Keycode: ESU301

 
Back to top
Chapter 12: Weathering, Soil, and Erosion

 

When Is Mud Dangerous?
Keycode: ES1204

 

 

How Does Soil Vary from Place to Place?
Keycode: ES1206

Back to top
Chapter 13: Surface Water

 

How Does Stream Flow Change over Time?
Keycode: ES1301

 

Have Flood Controls on the Mississippi River Been Successful?
Keycode: ES1308

 

 

What Controls the Shape of a Delta?
Keycode: ES1304

Back to top
Chapter 14: Ground Water

 

How Does Water Move through the Ground?
Keycode: ES1401

 

 

How Many People Can an Aquifer Support?
Keycode: ES1406

Back to top
Chapter 15: Glaciers

 

How Does Land Cover Affect Global Temperature?
Keycode: ES1504

 

 

How Fast Do Glaciers Flow?
Keycode: ES1507

Back to top
Chapter 16: Wind, Waves, and Currents

 

What Controls the Shape and Motion of Sand Dunes?
Keycode: ES1603

 

How Do Storms Affect Coastlines?
Keycode: ES1608

 

 

Where Did This Sand Come From?
Keycode: ES1607

 
Back to top
Unit 4: Earth's Changing Surface

 

What Are the Costs and Benefits of Damming a River?
Keycode: ESU401

 
Back to top
Chapter 17: Atmosphere

 

What Can You Learn from a Thermometer on a Rising Balloon?
Keycode: ES1702

 

How Does the Ozone Layer Change over Time?
Keycode: ES1708

 

 

How Does the Temperature at One Location Change over a Year?
Keycode: ES1706

Back to top
Chapter 18: Water in the Atmosphere

 

Which Way Does the Wind Blow?
Keycode: ES1806

 

 

How Acidic Is Your Rain?
Keycode: ES1807

Back to top
Chapter 19: Atmosphere in Motion

 

How Does the Jet Stream Change through the Year?
Keycode: ES1906

 

 

Could You Break the Record for an Around-the-World Balloon Flight?
Keycode: ES1908

Back to top
Chapter 20: Weather

 

How Does a Mid-Latitude Low Develop into a Storm System?
Keycode: ES2003

 

 

How Well Can You Predict Tomorrow's Weather?
Keycode: ES2013

Back to top
Chapter 21: Climate and Climate Change

 

What Factors Control Your Local Climate?
Keycode: ES2101

 

 

How Do Ice Cores of Glaciers Tell Us about Past Climates?
Keycode: ES2105

Back to top
Unit 5: Atmosphere and Weather

 

How Might Global Climate Change Affect Life on Earth?
Keycode: ESU501

 
Back to top
Chapter 22: The Water Planet

 

How Do Temperature and Salinity Affect Mixing in the Oceans?
Keycode: ES2202

 

 

What Is Responsible for Smaller Shrimp Catches?
Keycode: ES2206

Back to top
Chapter 23: The Ocean Floor

 

What Does the Ocean Floor Look Like?
Keycode: ES2301

 

 

When Were the Atlantic and Pacific Oceans Separated by Land?
Keycode: ES2307

Back to top
Chapter 24: The Moving Ocean

 

How Can One Ocean Current Affect the Whole North Atlantic?
Keycode: ES2403

 

Could You Break the Record for an Ocean Sailboat Race?
Keycode: ES2407

 

 

How Do Tides Work?
Keycode: ES2406

Back to top
Unit 6: Earth's Oceans

 

Can We Blame El Niño for Wild Weather?
Keycode: ESU601

 
Back to top
Chapter 25: Earth's Moon

 

What if Earth and the Moon Were Hit by Twin Asteroids?
Keycode: ES2506

 
Back to top
Chapter 26: The Sun and the Solar System

 

Why Does the Size of the Sun Appear to Change?
Keycode: ES2603

 

 

How Does the Sunspot Cycle Affect Earth?
Keycode: ES2605

Back to top
Chapter 27: The Planets and the Solar System

 

How Fast Does the Wind Blow on Jupiter?
Keycode: ES2704

 

 

What Processes Shape Planetary Surfaces?
Keycode: ES2708

Back to top
Chapter 28: Stars and Galaxies

 

What Does the Spectrum of a Star Tell Us about Its Temperature?
Keycode: ES2803

 

 

What Happens as a Star Runs Out of Hydrogen?
Keycode: ES2810

Back to top
Unit 7: Space

 

Could Mars Support Life?
Keycode: ESU701

 
Back to top
Chapter 29: Studying the Past

 

What Stories Do Rocks Tell?
Keycode: ES2903

 

How Did the Layers of the Grand Canyon Form?
Keycode: ES2906

 

 

How Do Trees Record Time?
Keycode: ES2905

Back to top
Chapter 30: Views of Earth's Past

 

How Has Life Changed over Geologic Time?
Keycode: ES3002

 

 

Where and When Did Dinosaurs Live?
Keycode: ES3008

Back to top
Unit 8: Earth's History

 

What Caused the Mass Extinction Recorded at the K-T Boundary?
Keycode: ESU801

 
Back to top