Plate Tectonics and the Rock Cycle Quick Check.
Which kind of rock is formed when lava leaves a volcano and cools?
1. conglomerate
2. metamorphic
3. igneous
4. sedimentary
3. igneous
Plate Tectonics and the Rock Cycle Quick Check
1 of 41 of 4 Items
Question
Which kind of rock is formed when lava leaves a volcano and cools?
Responses
sedimentary
sedimentary - no response given
igneous
igneous - no response given
metamorphic
metamorphic - no response given
conglomerate
When lava leaves a volcano and cools, it forms igneous rock. Therefore, the correct answer is 3. igneous.
The kind of rock that is formed when lava leaves a volcano and cools is igneous rock. To arrive at the answer, it is helpful to have some basic knowledge of the rock cycle.
First, let's understand that the rock cycle is the continuous process of rocks being formed, broken down, and transformed from one type to another over millions of years. It involves three main types of rocks: igneous, sedimentary, and metamorphic.
1. Conglomerate: This is a type of sedimentary rock that forms when loose sediments such as gravel, sand, or clay are compacted and cemented together. Conglomerate does not form directly from lava cooling.
2. Metamorphic: This type of rock forms when existing rocks undergo high heat and pressure, causing their minerals and textures to change. Metamorphic rocks are not directly formed from lava cooling.
3. Igneous: This is the correct answer. Igneous rocks form when molten material, called magma, or lava cools and solidifies. When lava is erupted from a volcano and rapidly cools on the Earth's surface, it forms an igneous rock. Examples of igneous rocks are basalt and granite.
4. Sedimentary: Sedimentary rocks are formed from layers of sediments that accumulate over time and are later compacted and cemented together. They are not directly formed from the cooling of lava.
In summary, the correct answer is 3. Igneous rock is formed when lava leaves a volcano and cools.