The rate of change in ice melting is a result of its surface area, which is related to its shape. Because it represents a point of contact with another substance at a higher temperature, differences in surface area affect the melting rate of ice proportionately. A thin sheet of ice, which has a greater degree of surface area, will melt faster than a cube of ice that is of a similar volume.Continue Reading
The common term "melting" describes one of the physical processes referred to in chemistry and physics as "phase transition," in which a substance is changed from one physical state to another by an increase or decrease of its internal energy. One of the scientific criteria regarded as a qualifier for a substance melting is the amplitude of the internal vibrations within a solid substance reaching a point where vibrational instability causes the crystal structures to come apart.
Intermolecular forces, or IMF, are the binding forces that cause the water molecules in ice to rotate around fixed positions. Adding heat to ice raises the internal kinetic energy level. The increased internal vibrations enable the water molecules to slide freely past each other, and they assume the liquid physical stage of water. If the temperature is increased far enough past the point at which water assumes its liquid stage, the internal energy will enable the water molecules to move independently of each other. At this point, water assumes the gaseous state commonly referred to as water vapor or steam.Learn more about Earth Science
New Hampshire held the record for the world's highest ground-point level wind speed from 1934 to 2010, the year it was beaten by Barrow Island, Australia. On Apr. 12, 1934, the state's Mount Washington Observatory recorded a ground level wind speed of 231 miles per hour.Full Answer >
The Earth rotates at about 1037 miles per hour at the equator, and the speed at the North Pole and South Pole is near zero. The speed of the Earth's rotation increases when approaching the equator and decreases toward the poles.Full Answer >
Valley and continental glaciers differ mainly in area, thickness and speed of movement. The differences arise due to their location and relationship with underlying topography.Full Answer >
Rivers originate from forms of precipitation, springs, groundwater recharge or melted ice and snow gathering at the top of a mountain or hill. This trickling of water starts as a gully, then converges with tributary streams to form a river. A river is then formed by its flowing motion cutting through the surface to allow it to flow.Full Answer >