問題一覧
1
19) When eruptions are violent, the silicon dioxide content of magma is
high.
2
(5) Once magma reaches the surface, it is called
lava.
3
(14) Kilauea is
a shield volcano.
4
18) What kind of volcanoes form when magma has low viscosity(粘性)?
shield volcano
5
9) What is the smoke seen in an eruption called?
Plume
6
10) What is a path by which the magma rise called?
Vent
7
(20) Which is NOT a benefit of volcanoes?
Solar energy
8
(3) The volcanoes in Japan are formed at
a Convergent boundary.
9
2) Where are volcanoes formed?
All
10
15) Showa shinzan is
a lava dome.
11
What is magma?
Hot,molten rocks
12
16) Mt. Tsukuba is
not a volcano.
13
(6) The area below the crust where magma is stored is
magma chamber.
14
17) The main components of volcanic gas in the magma are
water vapor and carbon dioxide
15
(8) What are solid volcanic products more than 2 mm?
Volcanic bomb
16
11) Look at the picture. What is this called?
Breadcrust bomb
17
(7) What are solid volcanic products less than 2 mm?
Volcanic ash
18
(4) Where are 60~70% of magma created on the Earth?
at Divergent boundary
19
13) Mt. Fuji is
a stratovolcano.
20
12) When the lava from an eruption cools and hardens, what is it called?
Igneous rock