Fast Changes
Which of the following is a fast change:
a. flood
b.weathering
c. erosion
Flood
Which of the following is a slow change to the surface of Earth?
a. Volcano
b. Lanslide
c. Erosion
c. Erosion
-They cut down trees to make houses
-Dig into mountains to make tunnels
-We build roads
-We dig into the earth and take out rocks and minerals we need.
What is a crater?
The hole at the top of a volcano
Which one best completes the sentence:
------------ along the river could protect my city from floods.
a. weather b. levees c. windbreaks
b. levees
What happens when heavy rain causes a land slide?
Rocks, dirt, and plants fall down the side of a mountain. They can block roads and destroy property
Weathering and erosion of a mountain takes ______ years.
Millions of years
Name one way people change water and why
-People drain the water to make cities and houses
-We change the way rivers flow to make houses and protect areas
-We build things to stop floods
-We dig out sand in the ocean to help ships pass
-We build dams on rivers to bring water
What is a dam?
A large wall made to block water in a river or lake.
Which method is the best to stop lanslides:
a. cover the ground with sheets of material
b. make streams of water to flow away from the weak ground.
b. make streams of water to flow away from the weak ground.
What is the number one thing that causes floods?
Heavy rain for a long time
Give an example of deposition at the beach.
-Seashells
-Trash
-Etc.
An engineer makes a long, tall dike for a city near a beach and another engineer makes a short, low dike. Which one is better to hold back water. Why?
Long and tall because it can be tall enough to prevent flooding. If it is too short, the water can more easily pass during a flood.
What is a dike?
A long wall built to hold back ocean water
a. a dike
b. a levee
c. a dam
d. a windbreak
d. a windbreak
Earthquakes might cause...list two things
-buildings to fall
-tear apart roads and bridges
-large cracks in the ground
-landslides
In the picture which type of people change is this:
a. dike
b. levee
c. windbreak
a. dike
What is a levee?
A short wall along a river to hold back rising water and floods.
Why would people want to stop erosion at the beach?
To protect their homes and buildings
What can cause a landslide? List three
-Volcanoes, Earthquakes, Heavy rains, Floods
What things can cause erosion? List all.
BONUS POSSIBLE
BONUS 200 points if you said:
people and animals
In the picture which type of people change is this:
a. dike
b. levee
c. windbreak
c. windbreak
What is a windbreak?
BONUS POSSIBLE: What can a windbreak be made out of. List all three.
A row of objects that blocks the wind
BONUS 100: Trees, Bushes, or Fences
To protect his plants from being blown away