Landforms
Most of the Earth is covered by?
Water
Sand is made up of ________________.
Small bits of rocks
What is an earthquake?
An earthquake make the ground shake. They can cause a lot of damage and they are difficult to detect.
Name a change you can see happening to Earth's Surface.
Landslide, storm leaving big puddles, earthquake destruction, flood, volcano
People can protect farmland from wind damage by putting up large levees.
Most of Earth's water is ________.
Salty
Soil is the ___________________ of the Earth's surface.
top, loose layer
What is a volcano?
A volcano is a large opening in the Earth's surface.
Name an example of a fast moving change to Earth's surface.
A flood from heavy rain that quickly covers dry land.
A cliff is a large body of water in the middle of land.
False - A cliff is a high, steep rock wall.
A valley is a low place between mountains or hills.
A hill of sand is called a ____________.
Dune
What do you call the machine the measures the strength of an earthquake?
A seismograph
How do the changes on Earth's surface happen?
The changes on Earth's surface can happen quickly or take place slowly. The Earth's surface is always changing.
A fast moving river changes the land by carving away rocks and soil and carrying sand, rocks, and soil away.
True - It can also pick up sand from the bottom of the river and move it to a new location.
Most of Earth's water is in the ___________.
Oceans
How can a strong wind damage a farm?
It takes away the rich soil and it makes it difficult for the plants to grow.
What causes an earthquake?
A earthquake is caused by rocks changing position below the Earth's Surface.
Name an example of a slow change to the Earth's surface
A mountain becomes bigger.
A glacier melts adding water to rivers and oceans.
Wind changes the size and shape of sand dunes.
True
What is a glacier?
A glacier is a large piece of ice that covers land.
How do plants help protect land in windy areas?
Plant roots help hold soil in place.
What is lava?
Lava is the melted rock that flows from a volcano.
How does a volcano changes the Earth's surface?
It covers the land around it with rocks and ash.
A seismograph measures the number of French fries in your Happy Meal.
False - A seismograph measures the strength of an earthquake.