Survey of the Seas
The dangerous currents formed when large amounts of water from waves surge out to sea through a break in a sandbar are called ______________
Rip currents
What gemstone consists of corundum with traces of iron or titanium that give it a distinctive blue color?
Sapphire
Based on biblical teachings, what event was probably directly responsible for laying down most of Earth’s sedimentary rock layers?
The Flood
Fossils used by evolutionists to date rock layers are called ________________ fossils
index
In an experiment, a variable observed to determine the results is a ____________________ variable
Dependent
What type of underwater valley gives mid-ocean ridges the appearance of having twin mountain ranges?
rift
What well-known amorphous igneous rock has a glass-like temperature and splits to form sharp edges?
Obsidian
What method of erosion prevention involves planting alternating strips of different types of crops?
strip-cropping
Which of the following was thought to be a missing link in man’s evolution but was later found to be the remains of a modern human?
Cro-Magnon Man
What is any area of the sea that exceeds 6000 m in depth called?
hadal zone
What oceanographic tool charts currents far beneath the surface and sends back accurate measurements of those currents and water properties?
profiling float
What are regions of the earth’s surface where limestone is exposed and abundant?
Karst Regions
What is the top layer of soil, which contains most of the organic substances and nutrients, called?
top soil
What term describes a fossil that extends through multiple strata?
polystrate fossil
What are the circular paths that ocean currents move in called?
gyres
What substance makes up most of the salt in the oceans?
Sodium Chloride
At the end of the sandy, underwater plain that borders the land a sharp drop-off marks the beginning of the ___________________________
Continental Shelf
The material carried by a stream is called what...
load
What technique do evolutionists use to assign supposedly exact ages to rocks and fossils?
radiometric dating
What is the ability to duplicate an experiment several times while keeping all factors as similar as possible between experiments and coming to the same conclusion?
repeatability
The two main factors that determine the density of seawater are temperature and
Salinity
What method of measuring an earthquake’s strength is based on the earthquake’s effects on people and structures?
Modified Mercalli Scale
What are large holes formed when huge chunks of melting glacial ice lodge in washed-out sediments?
kettles
The idea that understanding modern geological processes is the key to understanding the earth’s geological history is known as
uniformitarianism
What type of current is made of seawater mixed with mud or silt and can erode the ocean floor to produce submarine canyons?
turbidity current