https://padlet.com/devontaglaze1/csaiw4zn9lm8 en-us 2016-10-24 14:50:55 UTC 2016-10-24 15:40:14 UTC hello@padlet.com devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132726077 In addition to varying in composition, soils differ in their densities and abilities to absorb and retain water. In between the spores of soil are pore spaces, which contain different levels of soil, air and water. In soils, the ratio of air-filled pore spaces to water-filled pore spaces varies widely and changes frequently. These rations may change daily, weekly and seasonally and depend on many intrinsic and external factors and conditions, such as water additions through groundwater discharge, flooding and precipitation. Additionally, the volume of pore space may be altered by human and mechanical techniques, such as farming and tilling. Content and composition of soils varies depending on geographical location and surrounding environment as well.

]]> 2016-10-24 15:02:53 UTC https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132726077 devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132730319 Mountains make up about one-fifth of the world's landscape, and provide homes to at least one-tenth of the world's people.Heights of mountains are generally given as heights above sea level.The world's highest peak on land is Mount Everest in the Himalayas. It is 8,850.1728 m (29,036 ft) tall. Ben Nevis is also the highest mountain in Great Britain. The tallest known mountain in the solar system is Olympus Mons, located on Mars. There are mountains under the surface of the sea!

]]> 2016-10-24 15:11:38 UTC https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132730319 devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132734953 Earthquakes involve the powerful movement of rocks in the Earth’s crust. The rapid release of energy creates seismic waves that travel through the earth. Scientists use the different speeds of seismic waves to locate the epicentre (the point on the surface directly above where the earthquake originated) of earthquakes. Seismometers are used to measure the magnitude of earthquakes. You are unlikely to feel a magnitude 3 earthquake but a magnitude 6 earthquake could potentially cause large damage. The damage caused by earthquakes also depends on their depth and fault type. The earthquake that hit the Tohoku region of Japan on March 11, 2011, had a magnitude of 9.0 and killed over 15000 people.

]]> 2016-10-24 15:21:49 UTC https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132734953 devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132737933 A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. In an eruption, gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. The danger area around a volcano covers about a 20-mile radius. Fresh volcanic ash, made of pulverized rock, can be harsh, acidic, gritty, glassy and smelly. The ash can cause damage to the lungs of older people, babies and people with respiratory problems.  Volcanic lightning occurs mostly within the cloud of ash during an eruption, and is created by the friction of the ash rushing to the surface. Roughly 200 accounts of this lightning have been witnessed live.

https://youtu.be/ESlGRXDoRMM?t=2

]]> 2016-10-24 15:27:55 UTC https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132737933 devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132739320 A geyser is a spring from which water and steam is ejected forcefully into the air at heights ranging from less than a metre (a few feet) to over one hundred metres (several hundred feet). Geysers are a quite rare phenomenon on Earth due to the precise conditions that are required for them to form. They are mainly clustered near active volcanic areas. There are only around one thousand known active geysers worldwide. Geyser formation requires a particular combination of three geological aspects, water, intense heat and cracks/spaces in the ground that form a type of underground plumbing system. Geysers are formed by water seeping through the ground and coming into contact with rock heated by magma at relatively shallow depths in volcanic areas.

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]]> 2016-10-24 15:31:11 UTC https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132739320 devontaglaze1 https://padlet.com/devontaglaze1/csaiw4zn9lm8/wish/132742596 Landslides occur when masses of rock, earth, or debris move down a slope. Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels. Mudslides develop when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris. Mudslides usually start on steep slopes and can be activated by natural disasters. Areas where wildfires or human modification of the land have destroyed vegetation on slopes are particularly vulnerable to landslides during and after heavy rains. Landslides and mudflows can cause tons of damage, some of which can lead to actual injury including: Rapidly moving water and debris can lead to trauma; Broken electrical, water, gas, and sewage lines that can result in injury or illness. Every year, landslides in the U.S. cause roughly $3.5 billion in damage and kill between 25 and 50 people.

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