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Earth Process and Materials

Absolute Dating

Change of Environments Over Time

Fossil Evidence

Relative Dating

Earth Structure

Crust, Mantle, Core

Plate Tectonics

Renewable and Nonrenewable

Pollution/Conservation

Erosion-Deposition

Mechanical vs Chemical

Weather and Climate

Climatic Factors

The Water Cycle

Evaporation-Condensation-Precipitation

Runoff-Infiltration-Transpiration

Weather Prediction

Air Masses/Fronts

Barometer Readings, Predictions

Cloud Types, Trends

Weather Variables and Measurements

Air Temperature

Earth Sun Moon System

Our Solar System

Effects of Gravity/Inertia

Meteors/Meteorites

Formation of Solar System

Structures and Functions

External Characteristics

Asexual Reproduction (regeneration)

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

Complete Metamorphosis(insect, amphibian)

Incomplete Metamorphosis

Regulation and Behavior

Internal Stimuli

Response to Environment

Animal Cell Structure

Plant Cell Structure

Cell as Unit of Life

Levels of Organization

Mitosis, Cell Division

Material Movement

Binomial Classification

Bacteria (2 kingdoms)

Protists Kingdom

Ecology/Ecosystems

Adaptation and Natural Selection

Changes in Environments

Genetic Variations

Dynamics of Ecosystems

Cycles of Matter

Energy Transfer

Organization of Ecosystems

Populations and Communities

Heredity and Genetics

Concepts of Heredity

Effect of Environment

Inherited Traits

Learned Behavior/Acquired Traits

Natural Selection

Genetic Engineering

Sex-Linked Traits

Mechanisms of Heredity

Mendels Patterns

Regulation and Responses

Other Responses to Environment

Bulbs/Cuttings/Tubers

Flowering Plants

Structures and Functions

Flowering Plants

Non-Flowering Plants

Roots, Stems, Leaves

Physical Science

Properties of Objects/Materials

Classification (Physical vs. Chemical

Properties of Matter

States of Matter

Descriptions/Properties

Particulate Models

Melting/Freezing Point

Boiling/Condensing Point

Classification of Matter

Changes of Matter

Physical Changes

Chemical Changes

Nuclear Changes

Atomic Model of Matter

Simple Machines

Pushes and Pulls

Affect on Position and Motion

Newton's Second Law

Newton's Third Law (Action-Reaction)

Potential Energy

Law of Conservation of Energy

Transfer of Heat

Related to Temperature

Kinetic Energy Model

Heating of Different Surfaces

Transfer of Sound

Pitch Variations

Volume Variations

Absorption (Insulation)

Reflections (Echoes)

Straight-Line Path

Electromagnetic Spectrum

Current/Circuits

Electromagnetism

Generating Current

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 History > Eras of time

The geologic time spiral - A path to the past

http://pubs.usgs.gov/gip/geotimespiral/

A graphic representation of the past 4.5 billion years in PDF and is downloadable. See USGS Fact Sheet 2007-3015 at http://pubs.usgs.gov/fs/2007/3015/ for ages of geologic time periods. Ages in the spiral have been rounded from the age estimates in the Fact Sheet. B.Y., billion years; M.Y., million years.

Resource Type: Audio/Visual - Illustration
Grade Level: 5, 6