Science Notes 2nd pd

Methods of Heat Transfer

• Heat Transfer always goes from Hot To Cold

• Heat moves from an area of high heat to an area of low heat because The faster-vibrating molecules (heat) collide with the slower molecules (cool). This makes the cooler molecules vibrate more quickly, and the object gets warmer.

Conduction

Heat moves from one object to another object through direct touch (Contact)

Convection

A type of heat transfer that can only happen in liquids and gases, because it involves those liquids or gases physically moving (Non-Contact)

Radiation

Transfer of heat through waves (Waves)

Earth Surface Processes (W.E.D)

• Deposition - Sediment being dropped off in a new location.

• Weathering- Breaking down of rocks into smaller pieces called sediment

• Erosion- The Movement of sediment by wind, water, and/or ice.

Geologic Evolution

• The gradual process of change in Earth's physical features over vast periods periods

• Ex: There are fossil patterns that show u in different continents matching together which means the continents were once together called Pangea

Geologic Dating

• Measuring the age of Earth and its parts, including the Law Of Superposition and Radioactive Dating

• Radioactive Dating- a method for determining the age of rock layers using radioactive isotopes

Law of Superposition

• As time passes organisms die and sediment covers them forming fossil evidence.

• the oldest fossils are found in the bottom rock layer.

• you DONT get the exact age of the rock but we know it age in relation to other layers

Radioactive Dating

• As time passes specific elements decay at a set rate.

Electromagnetic Spectrum

• lowest energy- Radio → Microwave → Infraed → Ultraviolet → X-Ray → Gamma Rays - highest energy

• Light is a form of energy and is a wave

• the distance from one crest(the highest point) to another is a wavelength

• the longer the wavelength the lower the energy the shorter the higher energy

Heat Flow

• heat transferred from hot to cold

• heat floe stops when reached the same temp