Which frozen liquid melts the slowest?

Which frozen liquid melts the slowest? Water melted the slowest with an average of 145 minutes. Next was sweet tea, which melted in 119 minutes. Do frozen liquids melt at the same rate? A 1 pound block of ice and 1 pound of ice cubes melt at very different rates. The only difference between the […]

Can mining ever be sustainable?

Can mining ever be sustainable? Mining can become more environmentally sustainable1 by developing and integrating practices that reduce the environmental impact of mining operations. Why is mining not sustainable? “Mining is inherently unsustainable: It is destructive to the biophysical environment, and its contributions to human well-being are uneven and often overwhelmed by the social and […]

Which rocks contain the most silica?

Which rocks contain the most silica? Compilations of many rock analyses show that rhyolite and granite are felsic, with an average silica content of about 72 percent; syenite, diorite, and monzonite are intermediate, with an average silica content of 59 percent; gabbro and basalt are mafic, with an average silica content of 48 percent; and […]

Do longer wavelengths have low energy?

Do longer wavelengths have low energy? Related to the energy and frequency is the wavelength, or the distance between corresponding points on subsequent waves. Shorter waves move faster and have more energy, and longer waves travel more slowly and have less energy. Why do short waves have high energy? “Short wavelength” is the same as […]

How do you describe a distance time graph?

How do you describe a distance time graph? If an object moves along a straight line, the distance travelled can be represented by a distance-time graph. In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the […]

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