Fossils
An imprint of a plant is left in a rock. What type of fossil is this?
Mold Fossil
What is weathering?
Breaking down of rocks and sediments
What causes a landslide?
Gravity
No tree roots to hold soil in place
Forest fires damaging tree roots
heavy rains with no deep roots to calm erosion
Name 3 landforms
Many right answers: islands, mountains, lakes, isthmus, etc.
If a bone of a shark is found in a forest, what is likely the cause?
There was a change in landscape over time
Why do farmers plant trees or leave their crops in their field?
To prevent erosion of their fields
What causes earthquakes?
Movement in plates on the earth. They may collide or move away from each other. This is referred to as platetectonics
How are islands formed?
Volcanic activity
deposition of lava rock
Does every animal that dies become a fossil?
No
What is depostition
Depositing of soil, sand, dirt and rocks. Dropping of rocks-where they are left
What causes volcanoes?
Molten lava from deep in the earth escapes through tubes, or from under the sea. If 2 plates move away from each other, it can create space for lava to rise up.
How are hills formed?
Deposition of soil, rocks, and other sediments
What is one example of a trace fossil?
Any sign of life such as footprints, teetmarks, scratchmarks from animals
What is erosion?
Carrying away, moving, of rocks, soil, sand etc.
What are some changes a tsunami (giant wave) might cause to the landscape?
move the coast.
erode land
deposit sand in new places
Uproot trees and destroy animal habitats.
How are mountains formed?
By earthquakes
If an animal has flat dull teeth, what can you infer about the environment.
There were plants to eat
What causes shorelines to change over time?
Erosion