Show:
How Do Volcanoes Form?
Properties of Materials
All About
Viscosity and Magma
Parts of a
Volcano
Miscellaneous Info
100
A weak spot in the Earth's crust where molten material, known as magma, comes to the surface.
What is a volcano?
100
It is a substance that can't be broken down into other substances. Examples are hydrogen, carbon and oxygen.
What is an element?
100
The physical property of a liquid's resistance to flow
What is 'viscosity?'
100
The crater
What is the name of the bowl-shaped area that forms at the top of a volcano?
100
Slow moving, cooler lava
What is aa?
200
Molten mixture of rock-forming substances, gases, and water from the mantle
What is magma?
200
A substance that is made of two or more elements that have been chemically combined such as sugar, carbon dioxide and salt
What is a compound?
200
The silica content and the temperature
What are the two factors that determine the viscosity of magma?
200
The magma chamber
What is the place where magma collects at the bottom of a volcano called?
200
A hot spot volcano
What type of volcano forms above a hot spot area?
300
The upper part of the mantle
Where does magma come from?
300
Any property that produces a change in the composition of the substance such as the ability to burn or react with another substance
What is a chemical property?
300
More silica means darker magma and higher viscosity and less silica means lighter magma and lower viscosity
How does silica content affect magma?
300
The pipe
What is the name of the vertical tube in the ground that connects the magma chamber to the Earth's surface?
300
Honey, corn syrup and molasses
What are some liquids with high viscosities?
400
It becomes known as lava.
What is magma called when it reaches the surface?
400
A property of a substance that can be observed or measured such as the boiling or freezing points, hardness or density.
What is a physical property?
400
750 degrees C to 1175 degrees C
What is the temperature range of magma and lava?
400
Lava flow
What is the name of the area covered by lava as it pours out of the vent of a volcano?
400
The compound substance formed from silicon and oxygen
What is silica?
500
It is a volcanic belt formed along boundaries of tectonic plates in the Pacific Ocean.
What is the 'Ring of Fire?'
500
Iron rusts and forms iron oxide when exposed to air.
What is an example of a chemical change?
500
Fast moving, high temperature lava
What is pahoehoe?
500
Vents
What are the openings called where magma leaves the volcano?
500
Water, milk and orange juice
What are examples of liquids with low viscosities?