Earth's Catastrophic Past Flashcards
A new theory suggests that water arrived from ___ ____ brought on ___ ____?
- deep
- space
- ice
- comets
Describe the living conditions of the estremophile bacteria that live 200 feet below the surface of Idaho Falls.
- Temperatrue is aboiling pint of water
- Salty and grimy
- 100x more than surface pressure
- Conditions with no oxygen
- Toxic
What does the shock waves sent deep into the Earth’s crus reveal about what is buried below?
They show what is burued below based on how fast the wave is. The density of what is buried below.
The red rock in Karihini were formed when dissolved iron combined with oxygen to form hematite, or iron oxide, or rust. SInce the atmosphere on Earth at that time had no oxygen, what was the source of oxygen in this case?
The upper layers of the ocean have oxygen. Biology. Living organisms excreting oxygen as a result of photosynthesis.
What process was responsible for carving landscape of the Colorado Plateau on teh supercontinent of Pangea?
Erosion striped away layer after layer of rock. Water could tear away the rocks.
In Igauzu Falls, Argentina, the rock in the waterfall containe vidence of a geological event that took place 135 million years ago. A hard volcanic rock, called basalt, is more than 100 feet thick. What was the source of these rocks?
Sulfuric acid spilling and lava flow from volcanic eruptions.
What rare element, that originates from space, was found near the crater in Namibia?
The largest meteorite on Earth that was filled with the element Iridium.
What evidence was found deep in the cave system that suggests that these caves may have been dry due to an ice age?
Fossilized bat droppings, red saharan dust from the atmosphere. Stelecmite gardens that formed during the ice ages.
**Bats don’t live in an acquatic environment
