2: The Sun-Earth-Moon System

2.1: Earth's Motion

Comparing Earth and Venus
Seasons in 3D
Seasons: Why do we have them?
Solar System
Summer and Winter

2.2: Earth's Moon

Moonrise, Moonset, and Phases
Phases of the Moon

2.3: Eclipses and Tides

2D Eclipse
3D Eclipse
Eclipse
Penumbra Effect
Tides

3: The Solar System

3.1: The Structure of the Solar System

Solar System

3.2: The Inner Planets

Comparing Earth and Venus
Solar System
Solar System Explorer

3.3: The Outer Planets

Solar System
Solar System Explorer

3.4: Dwarf Planets and Other Objects

Solar System Explorer

4: Stars and Galaxies

4.2: The Sun and Other Stars

H-R Diagram

4.4: Galaxies and the Universe

Big Bang Theory - Hubble's Law

5: Matter: Properties and Changes

5.1: States of Matter

Phases of Water

5.2: Classifying Properties

Density Experiment: Slice and Dice

5.3: Physical Changes

Phase Changes

5.4: Chemical Changes

Chemical Changes

6: Matter and Atoms

6.2: The Structure of Atoms

Element Builder

8: Elements and Chemical Bonds

8.1: Electrons and Energy Levels

Element Builder

8.2: Compounds, Chemical Formulas, and Covalent Bonds

Covalent Bonds

8.3: Ionic and Metallic Bonds

Ionic Bonds

9: Mixtures, Solubility, and Acid/Base Solutions

9.2: Properties of Solutions

Solubility and Temperature

9.3: Acid and Base Solutions

pH Analysis
pH Analysis: Quad Color Indicator

10: Chemical Reactions and Equations

10.1: Understanding Chemical Reactions

Chemical Equations

10.2: Types of Chemical Reactions

Balancing Chemical Equations

10.3: Energy Changes and Chemical Reactions

Collision Theory
Reaction Energy

11: Plants Processes

11.1: Energy Processes in plants

Cell Energy Cycle
Photosynthesis Lab

12: Matter and Energy in the Environment

12.1: Abiotic Factors

Coral Reefs 1 - Abiotic Factors

12.2: Cycles of Matter

Carbon Cycle
Greenhouse Effect
Water Cycle

12.3: Energy in Ecosystems

Food Chain
Forest Ecosystem
Prairie Ecosystem