Unit 2 Flashcards
Energy
The ability to do work
How does energy flow
Radiation, Convection, and Conduction
Radiation
The movement of energy through electromagnetic waves; UV and rays in wavelengths to warm something up
Conduction
The transfer of heat energy through collisions of the atoms or molecules of a substance.
Convection
The movement of matter caused by differences in density.
External
More than 99.9% of the thermal energy that we feel on the ground, in the ocean water, and the atmosphere comes either directly or indirectly from the sun.
It drives the winds, ocean currents, and the water cycle, and supports all life on Earth.
Internal
Left over heat from Earth’s formation and energy released by atoms during radioactive decay processes.
Albedo
Measure of the percentage of light that a particular surface will reflect
Feedback
A response within a system
Most abundant elements in the Earth’s crust
Oxygen and silicon
Element
A substance that cannot be broken down into simpler substances by chemical means
Mineral
A substance that has specific characteristics.
Mineral rules
- Occurs naturally
- Inorganic
- Solid
- Specific Crystalline (structure/shape)
- Specific chemical composition
Crystal
a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
How does a crystal form
Crystals usually form from molten rock as the molten rock gradually cools.Crystals can also form when water evaporates.
