Earth Science

Geological Activity from Plate Tectonics

Predicting Earthquakes

Study Tip
Techniques such as terracing farms have been in use in South American and Asian countries for centuries

Point 1

  • Soil is a renewable resource, but it can be depleted more quickly than it regenerates.
  • Adding organic material such as compost and manure can increase the amount of nutrients in the soil.
  • Crop rotation, terracing farms, and planting trees can prevent the loss of the Earth’s topsoil.
Study Tip
Techniques such as terracing farms have been in use in South American and Asian countries for centuries
Study Tip
The same way a person may cast a shadow over another person when they stand under the sun, planets or celestial bodies that have aligned themselves cast shadows over one another as well.

Point 2

  • Soil is a renewable resource, but it can be depleted more quickly than it regenerates.
  • Adding organic material such as compost and manure can increase the amount of nutrients in the soil.
  • Crop rotation, terracing farms, and planting trees can prevent the loss of the Earth’s topsoil.
Concept Check
  • What are electromagnetic waves?
  • How are electromagnetic waves classified?
  • What is the unit that measure the amount of light reflected off a surface?