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Compare the radius and mass of Mercury to that of Earth. Radius is 1/3 and mass is 1/28 of Earth Explain the following features on Mercury’s surface AND draw a picture to help you remember : Scarps: cliffs that formed from moving crust Caloris Basin: largest crater basin (1000 mi across); volcanoes around the edge Chaotic terrain: crazy uplifted surface area exactly opposite Mercury as Caloris Basin What is the temperature like on Mercury? Why? ranges from about 800 to -300 F; no atmosphere Does Mercury have an atmosphere? Explain. No; low gravity and proximity to the Sun Where does the water ice on Mercury come from and where do we find it? found at the poles in deep craters; came from comets and/or volcanoes Does Mercury have a magnetic field? Explain. yes but it's about 1% the strength of Earth’s What is strange about Mercury’s motion around the Sun? Explain why this occurs. Mercury spins 3 times for every 2 trips around the Sun; highly elliptical orbit How does Venus compare to the Earth in terms of diameter and mass? let’s say 95% What are the components of the Venusian atmosphere? 96% CO2, 3.5% N2, and small amounts of H2O and other gasses Why is Venus so bright? (hint: it’s the same reason we can’t see the surface from space) thick atmosphere How much denser is the atmosphere on Venus than on the Earth? 100x the pressure What is the temperature like on Venus? about 900 F at the surface Explain why Venus has a runaway greenhouse effect. lots more CO2 and it’s closer to the Sun, evaporating water from past oceans just made it worse How does it ‘snow’ on Venus given the extreme heat? galenar and bismuthinite are vaporized at the surface and settle on mountains to then ‘snow’ What are the dominant surface features on Venus? Explain them. mostly VOLCANIC in origin (volcanoes, pancake domes, lava channels); few crater impacts; low elevation for most of the surface What evidence do we have that Venus has an active surface? not many impact craters T or F: Venus has the slowest rotation of any planet in the Solar System. What is Mars named after? Roman God of war Compare the diameter and mass of Mars to that of Earth. diameter is 1/2 and its mass 1/10 that of Earth Explain the following features on the Martian surface, including how they formed AND draw a picture: Valles Marineris: rift near the equator (2500 mi long, 60 mi wide, 4 mi deep); bigger than Grand Canyon (Venusian war or tharsis bulge) Tharsis bulge: upland area with 4 huge volcanoes (magma rose from interior) Olympus Mons: largest volcano in the solar system Dune fields: formed as wind moved away from poles What are the polar ice caps on Mars made of? Why is there a difference between the Northern and Southern caps? dry ice and water ice; difference between of seasons Why is Mars red? iron oxide in crust Explain some evidence of past liquid water on Mars. dried river beds, Martian blueberries, frozen lake in crater, teardrop water features What are the components of the Martian atmosphere? How does the density of it compare to Earth’s? CO2 (95%) with traces of N2 (3%), O2 and H2O; 1% density of Earth’s What is the temperature like on Mars? cold (average of -80 F) For liquid water to exist on the surface of Mars we think there had to be a thicker atmosphere in the past. Why is it so thin now? blasted away by impact; low gravity /low volcanic activity causes it to lose it over time What are the two moons of Mars? Where did they come from? Phobos and Deimos; captured asteroids Explain the differences and commonalities between the interiors of the inner planets
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Here’s your revised and organized notes: ⸻ Main Causes of the Boom WWI • Took place 1914-1918. • America joined in 1917. • Sold products to Britain and allies throughout the war. • Loaned money to Britain and allies, which was later used to buy war supplies from the USA. • America took over production due to disruptions in Europe. • No post-war destruction in the USA. • More jobs for soldiers when they returned. Government Policies • Republican government helped businesses. • Fordney-McCumber Tariff Act: Placed a tariff on goods imported from abroad. • Encouraged Americans to purchase American goods. • Tax cuts for the rich so more jobs could be created. • More money to buy consumer goods. New Ways to Buy and Sell • Advertising: billboards, magazines, newspapers. • Catalogs: people living in rural America could buy consumer goods. • Hire purchase plan: Spread out costs over a long period of time. Consumer Society • Americans became obsessed with buying things. • Advertisements encouraged people to spend their paychecks on new items, boosting the economy. • Benefited wealthier people, as they had more access to electrical products. Mass Production • Goods were not made by a single person but by many people on a conveyor line. • Ford invented it in 1913 to make his Model T car, which got cheaper every year. • 1925 price of the car: $290 (instead of the earlier $850). • Meant employees had to be trained for only one job on the line. • Goods were produced quickly and in bulk, making them cheaper and increasing profits. • Business owners benefited as they could mass-produce products faster and in better working conditions. ⸻ How Were Their Lives Affected? Factory Workers (Cotton & Wool) • Did not benefit. • Less demand for their products due to man-made fibers such as rayon. • Fashion used less fabric. • Prices fell, factories closed, and people were laid off. • Economic effects: drop in employment. African Americans (Did Not Benefit) • Sharecroppers had to give a portion of their land as rent. • Farmers lost out as there was a much lower demand for food after Europe began to redevelop. • Many Black people without jobs were unable to get new ones due to institutional racism. • Economic and social disadvantages. Farmers (Did Not Benefit) • Europe recovered and didn’t require American crops, leading to high unemployment. • 600,000 people unemployed. • High-tech meant more food was produced, lowering production costs but also leading to oversupply. • Economic struggles as they couldn’t sell goods to Europe, which was self-sufficient. • Combine harvesters and tractors allowed for greater production but didn’t help struggling farmers. ⸻ This structure makes it easier to follow and connects the causes of the boom with its effects
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