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With mouth wide open, vibrating air coming up the throat from the vocal chords leaving the open mouth and spreading in all directions. Hi, I am Janice VanCleave, author of 50+ best-selling science experiment books for children ages 4 through high school. I taught science for 27 years and now am creating this science website.   My scream was not staged. The picture was to be of two adult cats, which I was holding. A microsecond before the camera snapped, the two cats dug their claws into my skin as they prepared to leap out of my arms. A picture like this is great for making inferences. Kids could make "guesses" as to why I am screaming. They would be drawing on facts from the photo, such as I look like I am in pain or maybe I am just pretending.

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Home » Salt Flats

Salt Flats

By Janice VanCleave

Salt flats are usually flat, as their name implies. One salt flat that doesn’t adhere to this description is “The Devil’s Golf Course” in Death Valley National Park. 

This salt flat  was once a lake. As the water evaporated, the minerals that were dissolved in the lake water were left behind. Since the surface remains dry, the salty  surface has weathered over time creating sharp sculptured salt formation.

weathering: The breaking down of solid surfaces by factors including wind and water.

Classification

Before this salt flat became a national monument in 1934, exploratory holes were drilled. It was discovered that the salt and gravel beds extended to a depth of more than 1,000 feet (300 m). Later studies increased this to depths ranging up to 9,000 feet (2,700 m).

Math Challenge

Using dimensional analysis, determine the depth of the 9,000 ft. salt flat in miles.
The conversion factor between miles and feet is:


1 mile = 5,280 feet


Earth Science is the study of the Earth, which includes the atmosphere (air layer), lithosphere (solid materials-rocks), and hydrosphere (water-oceans, rivers, lakes, and streams).

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Filed Under: Earth Science Tagged With: conversion factor

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The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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