by Callie Oliver | Jan 7, 2019
(HS.ESS2B.b) Plate movements are responsible for most continental and ocean-floor features and for the distribution of most rocks and minerals within Earth’s crust.
by Callie Oliver | Jan 7, 2019
(HS.ESS1B.a) Kepler’s laws describe common features of the motions of orbiting objects, including their elliptical paths around the sun. Orbits may change due to the gravitational effects from, or collisions with, other objects in the solar system.
by Callie Oliver | Jan 7, 2019
(HS.PS1C.b) Spontaneous radioactive decays follow a characteristic exponential decay law. Nuclear lifetimes allow radiometric dating to be used to determine the ages of rocks and other materials.
by Callie Oliver | Jan 7, 2019
(HS.ESS2B.a) Plate tectonics is the unifying theory that explains the past and current movements of the rocks at Earth’s surface and provides a framework for understanding its geologic history.
by Callie Oliver | Jan 7, 2019
(HS.ESS1C.c) Although active geologic processes, such as plate tectonics and erosion, have destroyed or altered most of the very early rock record on Earth, other objects in the solar system, such as lunar rocks, asteroids, and meteorites, have changed little over...
