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Weathering, Erosion and Deposition Mechanical Weathering

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Weathering, Erosion and Deposition Mechanical Weathering WEATHERING, EROSION AND DEPOSITION MECHANICAL WEATHERING Breaking of rock into smaller particles by physical means Worms Abrasion- running Abrasion- water Animals moving rock and sediments Ice Plants Wind CHEMICAL WEATHERING Chemical breaking of rocks and minerals into new substances Lichen Acid rain Ground Water Water Air (oxidation) MECHANICAL AND CHEMICAL WEATHERING MASS MOVEMENT Movement of any material (rocks, soil, snow) down slope controlled by gravity Examples (Rapid mass movement) Rock slide landslide (Italy- notice the road) mudslide/landslide (Japan) Lahar (Japan) Examples (slow mass movement) Creep- an extremely slow movement of material AGENTS (FORCES) OF EROSION AND DEPOSITION CHANGING THE SURFACE OF THE EARTH Erosion – when materials (soil and sediment) are moved/transported from one area to another Deposition – when materials are dropped or deposited in another area from its original location Agents/Forces – Water, Wind, Ice, Gravity EROSION BY WIND DEPOSITION BY WIND EROSION BY WATER DEPOSITION BY WATER EROSION BY ICE LEFT SIDE SHOWS PERMAFROST W/ GLACIER RIGHT SIDE SHOW GLACIER MOVING CREATING VALLEY DEPOSITION BY ICE SAND LOOSE ROCK AND BIG ROCK CAME FROM THE SAME SOURCE… WHERE? EROSION BY GRAVITY HOW IS THE EARTH HEATED? Radiation is the primary Most energy in the way that air is heated. Troposhpere travels or Convection currents moves through move that heated air convection heated the air around the earth, and causing it to become less the difference between dense then rising, warm and cold air releasing energy and provide the energy becoming more dense needed to create sinking back down. weather. Layers review What is the order of the atmosphere layers starting with the layer closest to Earth? 25% 25% 25% 25% 1. Troposphere, Mesosphere, Stratosphere, Thermosphere 2. Troposphere, Stratosphere, Mesosphere, Thermosphere 3. Troposphere,, Thermosphere, Mesosphere 4. Thermosphere Mesosphere, Troposphere, Stratosphere, Troposphere,, ... Troposphere, M... Troposphere, S... Thermosphere M... IN WHICH LAYER DOES WEATHER OCCUR? 1. Troposphere 2. Ozone 3. Stratosphere 4. Mesosphere 0% 0% 0% 0% Ozone Troposphere Stratosphere Mesosphere WHAT IS THE IMPORTANCE OF THE OZONE LAYER? 1. Collects dust particles from the troposphere 2. Separates the troposphere from the stratosphere 3. Absorbs ultraviolet radiation from the sun 0% 0% 0% Collects dust ... Separates the ... Absorbs ultrav... WHICH LAYER IS THE FIRST EXPOSED TO THE SUN’S RADIATION? 1. Mesosphere 2. Troposphere 3. Stratosphere 4. Thermosphere 0% 0% 0% 0% Mesosphere Troposphere Stratosphere Thermosphere PEOPLE CANNOT BREATHE IN THIS LAYER 1. Mesosphere 2. Troposphere 3. Stratosphere 4. Thermosphere 0% 0% 0% 0% Mesosphere Troposphere Stratosphere Thermosphere IN WHICH LAYER DO WE SEE “SHOOTING STARS”? 1. Mesosphere 2. Thermosphere 3. Stratosphere 4. Troposphere 0% 0% 0% 0% Mesosphere Stratosphere Troposphere Thermosphere WHAT CAUSES THE “NORTHERN AND SOUTHERN LIGHTS”? 1. Radio waves are trapped and reflected as light 2. Ions (electrically charged particles) 3. Ultraviolet rays from the sun have been trapped and reflect 0% 0% 0% light. Ions (electric... Ultraviolet ra... Radio waves ar... WHICH OF THE FOLLOWING STATEMENTS IS TRUE ABOUT WHERE LOOSE ROCKS ON THE SURFACE OF THE EARTH COME FROM? 1. Loose rocks, including very large rocks as well as the very small pieces of rock in sand, were at one time part of Earth’s solid rock layer. 2. Very large rocks were at one time part of Earth’s solid rock layer, but the very small pieces of rock in sand were not. 3. The very small pieces of rock in sand were at one time part of Earth’s solid rock layer, but very large rocks were not. 4. No loose rocks, including very large rocks and the very small pieces of rock in sand , 0% 0% 0% 0% were ever part of Earth’s solid rock layer. Loose rocks, i... Very large roc... The very small... No loose rocks... WHICH STATEMENT BEST EXPLAINS WHY WATER FREEZING IN BETWEEN ROCKS RESULTS IN WEATHERING? 1. Frozen water acts as a solute 2. Water expands as it freezes 3. Mass of water increases when it freezes 0% 0% 0% 0% 4. Frozen water dissolves most types of rocks Mass of water ... Frozen water a... Water expands ... Frozen water d... WHICH OF THE FOLLOWING IS TRUE ABOUT HOW WATER CAN CHANGE EARTH’S SOLID ROCK LAYER AND LOOSE MATERIAL ON TOP OF IT? 1. Water can break rocks, carry rocks, and drop rocks in new locations. 2. Water can break rocks, but cannot carry and drop them in new locations. 3. Water can carry rocks and drop them in new locations, but cannot break rocks. 0% 0% 0% 0% 4. Water cannot break rocks, carry rocks, or drop them in new locations. Water can brea... Water can brea... Water can carr... Water cannot b... A MARBLE STATUE HAD SHARP DETAILS WHEN IT WAS FIRST CARVED, BUT NOW IT APPEARS “EATEN AWAY.” THIS IS MOST LIKELY A RESULT OF WHAT? 1. Mechanical weathering 2. Acid Precipitation 3. Oxidation 4. Differential 0% 0% 0% 0% weathering Oxidation Acid Precipita... Differential w... Mechanical wea... IF DURING ONE YEAR, A BEACH HAD 10 METERS OF EROSION AND 14 METERS OF DEPOSITION, WHAT COULD YOU PREDICT ABOUT THE SIZE OF THE BEACH THE FOLLOWING YEAR? 1. It will stay the same size. 2. It will decrease in size. 3. It will increase in size. 4. I cannot make a prediction using this information. 0% 0% 0% 0% It will stay t... It will decrea... It will increa... I cannot make ....
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