Random#1
A substance that cannot be broken down into a simpler form by ordinary chemical means is:
A) A mixture B) An element C) A compound
B) An element
A natural inorganic crystalline solid with a characteristic chemical composition is called:
A) gemstone B) mineral C) crystal
B) mineral
The largest of the oceans is the
A) Atlantic B) Indian C) Pacific
Pacific
Submerged flat-topped seamounts are
A) Guyots B) Seamounts C) Abyssal Plains
A) Guyots
The amount of dissolved solids in ocean water is called its
A) Salinity B) Nekton C) Density
Salinity
The smallest unit of an element is:
A) A molecule B) An atom C) An ion
B) An atom
The German scientist Alfred Wegener proposed the existence of a huge landmass called
Pangaea
A self-propelled, free-moving submarine that’s equipped for ocean research is a
A) Bathyscaph B) Bathysphere C) Turbidity
A) Bathyscaph
Potato-shaped lumps of minerals on the ocean floor are called
Nodules
The number of protons in the nucleus indicates the atom’s:
Atomic number
Color & hardness are examples of an element’s:
Physical properties
The age of a rock in years is known as:
A) Relative age B) Half-life age C) Absolute age
C) Absolute age
Some submarine canyons were probably formed by these dense currents that carry large amounts of sediment down the continental slopes
Turbidity currents
The gas that dissolves most easily in ocean water is
Carbon dioxide
The mass number of an atom is equal to its:
Total number of neutrons & protons
The amount of matter in a object is the object’s:
Mass
The words waxy, pearly, & dull describe a mineral's
luster
The deepest parts of the ocean are called
Trenches
A gap in the sequence of rock layers is:
An unconformity
Plastics, synthetic fabrics, & synthetic rubber are composed of chemicals that are derived from
petroleum
Particles in atoms that do not carry an electrical charge are called:
Neutrons
Cenozoic means:
Recent life
Volcanic mountains scattered along the ocean basin are
Seamounts
Light-colored igneous rocks are generally part of the
felsic family
Atoms of the same element that differ in mass are:
Isotopes