Science TEST on 2/22/23
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
Viscosity
resistance of a liquid flow
physical property
characteristic of a substance that can be observed without changing the composition of the substance ex. density
chemical property
any property that produces a change in the composition of matter ex. oxygen makes silver rust
• low silica content = low viscosity = ____ • gases in magma bubble out gently What kind of eruption?
Quiet eruptions
• high silica content = high viscosity = explosive eruption • gases become trapped in magma
Explosive eruptions
sand-sized
ash
pebble-sized
cinder
baseball to car-sized
bombs
• pocket beneath a volcano where magma collects
magma chamber
• long tube through which magma moves from the magma chamber to Earth’s surface
pipe
opening through which molten rock and gas exit a volcano
vent
bowl-shaped area that forms around a volcano’s central vent
crater
3 stages of volcano
active, dormant, extinct
a slab of volcanic rock formed when magma forces itself vertically across rock layers
dike
a slab of volcanic rock formed when magma squeezes horizontally between rock layers
sill
a deposit of hardened magma in a volcano’s pipe
volcanic neck
mass of rock formed when a large body of magma cools inside the crust
batholith
heated groundwater rises to the surface and collects in a natural pool
hot spring
fountain of water and steam that builds up pressure underground and erupts at regular intervals
geyser
a wide, gently sloping mountain made of layers of lava and formed by quiet eruptions
shield volcano
a steep, cone-shaped hill made of ash, cinder, and bombs piled around a volcano’s opening
cinder cone
a tall, cone-shaped mountain in which layers of lava alternate with layers of ash
composite volcano
large hole at the top of a volcano formed when the roof of a volcano’s magma chamber collapses
caldera
substance that cannot be broken down into other substances - ex. silver, oxygen, and mercury
element