Fast Land Changes
What do we call molten rock above Earth's surface?
lava
True or False? Lava leaves rich minerals in soil.
True
True or False - Landslides are a slow land change.
False
What natural resources do we use to make roads?
rocks/soil
This an opening in earth's crust through which lava, ash and gases flow.
volcano
What do we call molten rock below Earth's surface?
magma
What type of soil has the most nutrients to grow plants?
humus
True or False. A river that cuts through rock to form a canyon is a fast land change.
What natural resources do we use to make clothing?
cotton, leather or wool
How can we conserve natural resources?
use less of a resource
The movement of large amounts of rock and earth (dirt) down a slope is called ____________ .
a landslide
Name at least 2 different types of soil.
Types of soil: humus, sand, clay
What is the breaking down of rocks into smaller pieces called?
weathering
trees
True
Earthquakes are caused by...
Pressure causes tectonic plates and push and slip against each other. This causes the ground to shake and it can crack.
Soil is mainly made up of:
dead plants and animals and weathered rock
erosion
What resources do we use for food?
plants and animals
Landslides can be caused by: (2 things)
rain and earthquakes near steep slopes
Name 3 fast land changes.
volcanoes, earthquakes, landslides
Soil has weathered rock and dead plants and animals. Name 3 other things that can be in soil.
insects, worms, minerals, air, water
What are two ways rocks are weathered?
rocks bump into each other in a landslide, water gets into cracks of a rock and freezes, plant roots, ocean waves
Name 5 natural resources.
air, water, soil, plants, animals, oil, coal, sunlight, moving water, wind
Name three examples of conserving natural resources.
recycle, reuse, replant trees and plants, don't pollute air and water, don't waste (water,oil, gas, electricity)