Glassy dark colored volcanic rock. Usually composed of rhyolite.
Oceanic Spreading Ridge
An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust. This fracture can be seen beneath the ocean as a line of ridges that form as molten rock reaches the ocean bottom and solidifies.
An oceanic trench is a linear depression of the sea floor caused by the subduction of one plate under another.
Edible organs of an animal.
Off-Set Jaws (hunting)
The type of jaws on a leg-hold trap that, when closed, retain a gap of approximately 1/8 to 1/4 inch.
Bands of light and dark material on a glacier.
An injury that is exposed due to broken skin. An open wound is at high risk for infection.
Rope used to stretch a sail tight along the boom.
Outside Spread (hunting)
The distance between the two widest points on an animal’s antlers.
Sky condition when greater than 9/10 of the sky is covered by clouds.
An oxbow lake is a stagnant lake that is formed alongside a winding river when the river changes path because of soil erosion, leaving an abandoned stream channel, cut off from the rest of the river.
Atmospheric concentration of ozone found at an altitude of 10 to 50 kilometers above the Earth’s surface. This layer is important to life on the Earth because ozone absorbs harmful ultraviolet radiation.