Quiz 6_ DRRR

Which of the following geological phenomenon refers to surface shrinking that creates a massive, deep circular hole in a particular ground surface?

• liquefaction

• sinkhole

• landslide     

• erosion

.

In which area will a sinkhole likely occur?

• town proper near the beach

• road near a fissure area   

• Mountain with exposed bedrock

• farmland on a fault line

Which of the following is not a cause of ground subsidence?

• dewatering (oxidation) of peat or organic soil

• dissolution in limestone aquifers

• ground shaking

• . withdrawal of fluids (groundwater, petroleum, or geothermal)

Which of the following causes of landslides does deforestation belong?

• morphological causes

• geological causes

• human causes

• . technology causes

What are the signs of an impending landslide according to United States Geological Survey?

                   I. weathered materials

                   II. tilting or cracking of concrete floors and foundations

                   III. sunken or down-dropped road beds

                   IV. soil moving away from foundations

• I, II and III

• II, III and IV

• I, III and IV

• I, II and IV

What is coastal erosion?

• It is the movement of sand away from the shoreline.

• It is the removal of material from the coast by wave action, tidal currents, and/or activities of man, typically landward retreat of the coastline.

• It is a movement of the materials from the shoreline to the bodies of water.

• Physical phenomenon of coastal zones such as waves, underwater currents, and storm surges.

Sand extraction is a human activity that is harmful to coastal areas and its inhabitants. Which parameters of coastal erosion is this?

• lithology of rocks

• global sea level rise

• climate

• man-made intervention

What generic term defines any celestial body entering the earth surface creating a fireball?

• meteor

• bolide

• satellite

• space rocks

Why is there always a danger of near earth objects to collide with our planet?

                   I. Celestial bodies such as planets and space rocks attracts each other.

II. Disturbance upon the asteroid belt could push these materials to inner areas of the solar system.

                   III. Celestial bodies move away from each other and push toward other areas.

                   IV. Celestial bodies are large materials made of mixtures of solids and gases.

• I and II

• II and III

• III and IV

• II and IV

Which would best help prepare citizens of the world on bolide hazards?

• Each country should have its own space exploration to monitor possible NEO hazard in all parts of the world.

• Countries with space programs can coordinate with other countries regarding monitoring and preparedness plans.

• LASER technology can be created by each country so that the NEO can be neutralized using as many tools as possible.

• Countries can coordinate to create warning, hiding, and evacuation plans in case of massive collision with a NEO.