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  2. List of state achievement tests in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_state_achievement...

    The Prairie State Achievement Exam is used in Illinois, along with the [17] Illinois State Achievement Test. Alabama requires the Stanford Achievement Test Series; and in Texas, the Texas Higher Education Assessment. That state has discontinued its usage of the Texas Assessment of Academic Skills.

  3. Missouri Headwaters State Park - Wikipedia

    en.wikipedia.org/wiki/Missouri_Headwaters_State_Park

    Missouri Headwaters State Park is a public recreation area occupying 535 acres (217 ha) at the site of the official start of the Missouri River. The park offers camping, hiking trails, hunting, and water-related activities. It is located on Trident Road northeast of Three Forks, Montana at an elevation of 4,045 feet (1,233 m). [2]

  4. Radon - Wikipedia

    en.wikipedia.org/wiki/Radon

    Short-term radon test devices used for initial screening purposes are inexpensive, in some cases free. There are important protocols for taking short-term radon tests and it is imperative that they be strictly followed. The kit includes a collector that the user hangs in the lowest habitable floor of the house for two to seven days.

  5. Health effects of radon - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_radon

    There are relatively simple tests for radon gas. Radon test kits are commercially available. The short-term radon test kits used for screening purposes are inexpensive, in many cases free. In the United States, discounted test kits can be purchased online through The National Radon Program Services at Kansas State University or through state ...

  6. United States Geological Survey - Wikipedia

    en.wikipedia.org/wiki/United_States_Geological...

    The 15-minute series, at a scale of 1:63,360 (one inch representing one mile), remains the primary topographic quadrangle for the state of Alaska (and only for that particular state). Nearly 3,000 maps cover 97% of the state. [30]

  7. Upper Missouri River Breaks National Monument - Wikipedia

    en.wikipedia.org/wiki/Upper_Missouri_River...

    The Upper Missouri River Breaks National Monument is a national monument in the western United States, protecting the Missouri Breaks of north central Montana.Managed by the Bureau of Land Management (BLM), it is a series of badland areas characterized by rock outcroppings, steep bluffs, and grassy plains; a topography referred to as "The Breaks" (as the land appears to "break away" to the river).

  8. Black Sandy State Park - Wikipedia

    en.wikipedia.org/wiki/Black_Sandy_State_Park

    Black Sandy State Park is a public recreation area on the western shore of Hauser Lake reservoir, an impoundment of the Missouri River, located thirteen miles (21 km) northeast of Helena in Lewis and Clark County, Montana, in the United States. [2] The park is along the Lewis and Clark National Historic Trail.

  9. Fort Peck Dam - Wikipedia

    en.wikipedia.org/wiki/Fort_Peck_Dam

    At 21,026 feet (6,409 m) in length and over 250 feet (76 m) in height, it is the largest hydraulically filled dam in the United States, and creates Fort Peck Lake, the fifth largest artificial lake in the U.S., more than 130 miles (210 km) long, 200 feet (61 m) deep, and it has a 1,520-mile (2,450 km) shoreline which is longer than the state of ...