Tina found a rock that has stripes. She thinks the stripes are different layers. What type of rock do you think she has- igneous, sedimentary or metamorphic?
Sedimentary
Name the three types of rock:
Igneous, Sedimentary, and Metamorphic
Give an example of metamorphic rock:
marble
Give one example of an igneous rock:
Granite
Unpaved roads are often covered with gravel, which is small chunks of rock. What are two reasons gravel might be used on roads?
Gravel is hard and safe to drive on. The dirt underneath gravel is soft and breaks apart easily, making driving unsafe.
Give one example of sedimentary rock:
sandstone/ limestone
Some rocks can be all one color (like most minerals) because _____________________.
All of the substances mix together, making them all one color
Igneous rock is formed when ________________.
Magma cools and becomes solid
Glass is made from the mineral _____________.
Quartz
Sedimentary rock is formed when ___________________.
Layers of sediment, or dirt, settles at the bottom of a lake or ocean and the water puts pressure on the dirt, squeezing the layers together.
Metamorphic rock is made when ______________________.
Sedimentary or igneous rock is changed by pressure, heat, or both.
What are two characteristics of rubies and emeralds that make them beautiful?
Their luster and their connection with our culture
A mineral is made of how many substances?
One
Gemstones, such as rubies and emeralds, are used to make jewelry. Rubies and emeralds are both __________________.
Minerals
Some buildings- especially old buildings- are made from blocks of rock. Give one advantage and one disadvantage of building with blocks of rock.
Stone crumbles as it ages, but it takes a long time to wear down.
List at least eight glass objects in your home that are made of glass.