7th Grade Rocks and weathering

What is a natural, solid mixture of minerals or grains?

• Rocks
• Weathering
• Erosion
• Deposition

What is the difference between magma and lava? 

• Magma is located underground while lava is near or above surface.
• Magma is placed underground while lava is underground.
• Only magma can become igneous rock.
• Only lave can become sedimentary rock.

Which of followings is NOT true about sediment?

• Sediment is rock material.
• Remains of certain plants and animals can be sediments.
• It is smaller pieces of rocks that are broken down. 
• Big chunks of body. 

How do metamorphic rocks form?

• Rocks are exposed to extreme temperature and pressure. 
• Rocks are broken down into smaller pieces and made into layers. 
• Lava cooled down and became a rock. 
• Magma meets with water. 

How does an extrusive rock form?

• Volcanic material erupts and cools and crystallizes on Earth's surface.
• Volcanic material cools and crystallizes under Earth's surface. 
• Sediments make multiple layers underground. 
• Sediments make multiple layers on Earth's surface. 

How does an intrusive rock form? 

• Magma cools underground.
• Magma cools while in the air. 
• A rock heats up and liquifies.
• Extreme pressure is applied on sediments. 

What is compaction?

• Two or more layers pushing towards each other.
• Two ore more layers are separated.
• Rocks are melted by temperature.
• Sediments are deposited. 

Which of following is true about cementation? 

• Minerals grow between sediments and glue them together. 
• Making surface smooth and soft. 
• Only happens in igneous rock. 
• Compressing down rocks together. 

Which of following is NOT a type of sedimentary rocks?

• Clastic Sedimentary rocks. 
• Chemical Sedimentary rocks.
• Biochemical Sedimentary rocks. 
• Physicalchemistry Sedimentary rocks.

What differentiates a biochemical sedimentary rock from other types of sedimentary rock? 

• Biochemical rocks are normally stronger. 
• Biochemical rocks contain the remains of organisms. 
• Biochemical rocks are made under higher pressure. 
• Biochemical rocks come out as brighter color than others.