EARTH SCIENCE 1ST QUARTER - REVIEWER

The soil contamination can be indicated by its pH level. The statement is ________

• True, because it may be due to addition of acidic or basic pollutants.

• False, because the soil has its own way of controlling pH level

• True, because additional nutrients will always make the soil acidic

• False, because low amount of nutrients will make the soil basic

Which of the following is a process that involves planting seeds into the residue of the previous crop?

• Contour Farming          

• No-Till Farming

• Crop Rotation

• Strip Cropping

Why is planting trees help in conserving the soil? It is because ________

• A. it helps in maintaining soil moisture content.

• B. its roots hold the soil firmly avoiding erosion.

• C. it gives nourishment to the soil.

• D. all of the above

Soil conservation is _____

• a combination of practices used to protect the soil from degradation.

• a set of standards for using the soil in relation to current situations.

• a process of studying the soil profile.

• a policy of declaring a soil area to be protected for future use.

These are major inputs into agriculture to provide stable optimum growing conditions, meet plant nutrient demand and maintain a balanced nutrient.

• Lime and mineral fertilizers

• Growing plants

• Desertification

• Herbicides

Soil is composed of ____________.

• organic matter produced by organisms

• fragments of bedrock

• clay minerals formed by the chemical alteration of bedrock

• All of these

Which process involves improper disposal of waste products with hazardous chemicals that cause soil pollution?

                       

• Construction and Development

• Farming

• Mining  

• Waste Disposal

Which ONE involves land preparation for crops planting by cutting trees and other plants followed by plowing the soil?

              

• Construction and Development

• Farming

• Mining

• Waste Disposal

Which of the following affects the quality of water?

             

             

• A. Wastes

• B. Climate

• C. Precipitation

• D. Hydropower plant

Which of these practices show conservation of water?

• Repair leaking faucets.

• Wash clothes everyday

• Take long shower when bathing

• Use running water when brushing teeth