Precious metals are rare, naturally occurring metallic chemical elements. They tend to be less reactive than most elements, are usually ductile and have a high lustre. Precious metals have high economic value. Examples are: gold,silver and platinum. Gems on the other hand are minerals or rocks that can be cut, shaped, and polished into beautiful stones. Examples include emerald, ruby and sapphire.
Both precious metals and gems are rare and valuable.
Both precious metals and gems are _____.
-rare and valuable
-durable and malleable
-more common than regular minerals
-sources of renewable energy
b. stratovolcano
c. shield volcano
Answer:
c. shield volcano
Explanation:
Shield volcano: expels a large amount of lava and gradually builds a large shield-shaped mountain. The lava produced by this type of volcano is very hot and fluid, contributing to a longer runoff. One such example is the Mauna Loa, found in Hawaii, 9000 m high and 120 km in diameter.
B.calderas,conduits,and vents.
C . shield volcanoes, conduits, and vents
D.shield volcanoes, cinder cones, and calderas.
The Answer is A, the three major types of volcanoes are shield, cinder cones, and composite volcanoes.
B cinder cone volcano, rhyolitic magma, and Hawaiian explosion
C composite volcano, basaltic magma, and plinian explosion
D shield volcano, andesitic magma, and plinian explosion
Answer:
The correct answer is Secondary Waves (S).
Explanation:
When the rocks inside the earth suddenly break, or an exploration occurs, seismic waves are generated.
When an earthquake occurs, the secondary waves (S)are the second to reach a seismometer. This type of waves is known as body waves and they travel through the interior of the Earth instead of moving over the surface.
The waves that arrive first are the Primary (P) waves that are the fastest type of seismic wave, therefore they are the first to reach a seismograph.
S waves arrive second after an earthquake.
S waves are also known as secondary waves, hence why they arrive second after an earthquake.
Hope this helps!
a member of NAFTA
world's second largest country (landmass)
What country do these terms describe?
A) Mexico
B) Canada
C) Ireland
D) United States
Answer:
B
Explanation: