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Science

Earth Science

Earth Process and Materials

Earth History

Absolute Dating

Change of Environments Over Time

Renewable and Nonrenewable

Air

Fossil Fuels

Water

Rocks

Soil

Pollution/Conservation

Properties

Weathering

Erosion-Deposition

Mechanical vs Chemical

Weather and Climate

Climatic Factors

The Water Cycle

Clouds

Evaporation-Condensation-Precipitation

Precipitation

Runoff-Infiltration-Transpiration

Weather Prediction

Air Masses/Fronts

Barometer Readings, Predictions

Weather Variables and Measurements

Air Pressure

Air Temperature

Wind

Astronomy

Earth Sun Moon System

Day and Night

Year/Seasons

Moon

Phases

Eclipses

Tides

Our Solar System

Planets

Effects of Gravity/Inertia

Comets

Meteors/Meteorites

Formation of Solar System

Stars

Animals

Structures and Functions

External Characteristics

Organ Systems

Life Cycles

Asexual Reproduction (regeneration)

Basic Examples (i.e., birds, mammals)

Complete Metamorphosis(insect, amphibian)

Incomplete Metamorphosis

Regulation and Behavior

Internal Stimuli

Response to Environment

Cells

Cell Structure

Animal Cell Structure

Plant Cell Structure

Cell Theory

Cell as Unit of Life

Levels of Organization

Metabolism

Mitosis, Cell Division

Material Movement

Diffusion

Osmosis

Classification

Binomial Classification

Plant Kingdom

Animal Kingdom

Bacteria (2 kingdoms)

Protists Kingdom

Fungus Kingdom

Ecology/Ecosystems

Adaptation and Natural Selection

Changes in Environments

Genetic Variations

Dynamics of Ecosystems

Organization of Ecosystems

Biomes

Habitats

Niches

Populations and Communities

Heredity and Genetics

Concepts of Heredity

Effect of Environment

Inherited Traits

Learned Behavior/Acquired Traits

Mechanisms of Heredity

Chromosomes

DNA

Genes

Mendels Patterns

Plants

Needs

Photosynthesis

Regulation and Responses

Other Responses to Environment

Tropisms

Reproduction

Bulbs/Cuttings/Tubers

Flowering Plants

Gymnosperms

Mosses/Ferns

Structures and Functions

Matter

Properties of Objects/Materials

Observations

Classification (Physical vs. Chemical

Density

Descriptions/Properties

Particulate Models

Melting/Freezing Point

Boiling/Condensing Point

Classification of Matter

Atomic Model of Matter

Atoms

Molecules

Work

Motion

Speed

Forces

Gravity

Affect on Position and Motion

Newton's Second Law

Newton's Third Law (Action-Reaction)

Energy

Potential Energy

Kinetic Energy

Law of Conservation of Energy

Heat

Transfer of Heat

Related to Temperature

Kinetic Energy Model

Heating of Different Surfaces

Sound

Transfer of Sound

Pitch Variations

Volume Variations

Absorption (Insulation)

Light

Electromagnetic Spectrum

Static

Safety

Other Resources

Below is a list of other NSDL resources that may be of interest to K-12 teachers.

NSDL Science Refreshers

1 result returned

Resources for Science > Earth Science > Earth Process and Materials > Earth Structure > Ocean Floor

Sea floor spreading

http://www.pmel.noaa.gov/vents/nemo/explorer/concepts/spreading.html

A concise description of sea floor spreading enhanced with a graphic.

Resource Type: Reference Material - Nonfiction Reference, Audio/Visual - Illustration
Grade Level: 3, 4, 5, 6