Read and download free pdf of CBSE Class 7 Geography Environment Worksheet Set B. Students and teachers of Class 7 Social Science can get free printable Worksheets for Class 7 Social Science in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 7 students should practice questions and answers given here for Social Science in Grade 7 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 7 Social Science Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests
Environment Class 7 Social Science Worksheet Pdf
Class 7 Social Science students should refer to the following printable worksheet in Pdf for Environment in standard 7. This test paper with questions and answers for Grade 7 Social Science will be very useful for exams and help you to score good marks
Class 7 Social Science Worksheet for Environment
MCQ Questions on Hydrosphere Class 7 Social Science
Question. What might happen to the river basin system in your community if a factory continuously dumps toxins into the local river?
(a) Mutations will occur.
(b) The turbidity level will be low.
(c) Dissolved oxygen levels would be high.
(d) Thermal pollution will cause the temperature to increase.
Question. What process accounts for the fact that the water on Earth now is the same water that has been on Earth for 4 billion years?
(a) Nitrogen Cycle
(b) Water Cycle
(c) Kreb’s Cycle
(d) Life Cycle
Question. What is the basis of open ocean food webs and provides the majority of the world’s oxygen supply?
(b) ocean reefs
(d) sea turtles
Question. High concentration of anaerobic bacteria (biologic water pollutants) are often caused by a decrease in the
(a) temperature of ground water
(b) growth of aerobic bacteria in the water
(c) amount of organic wastes in the water
(d) amount of oxygen dissolved in the water
Question. Which statement BEST explains the difference between point and non-point sources of water?
(a) point sources can’t be traced
(b) non-point sources can’t be traced
(c) point sources have a single origin
(d) non-point sources have a single origin
ortant for living organisms?
(a) It is odorless.
(b) It does not conduct electricity.
(c) It is tasteless.
(d) It is a liquid at most temperatures on Earth.
Question. Which method of water treatment is MOST environmentally friendly?
(a) draining lakes
(b) dumping chemicals into the water
(c) water treatment plants
(d) building dams
Question. There is recent evidence shows that lakes are being affected by acid rain. Acid rain results in
(a) an increase in game fish population levels
(b) the stimulation of a rapid rate of evolution
(c) the elimination of many species of aquatic life
(d) an increase in agricultural productivity
Question. Which of the following technologies would be the most effective means of monitoring water availability over a large area?
(a) satellite imagery
(b) water witching
(d) ground truthing
Question What explanation can be used to describe the situation in the test tube shown above? Use the following diagram
(a) Water is polar and oil is polar therefore the two substances will not mix.
(b) Water is nonpolar and oil is nonpolar therefore the two substances will not mix.
(c) Water is nonpolar and oil is polar therefore the two substances will not mix.
(d) Water is polar and oil is nonpolar therefore the two substances will not mix.
Question. What can be inferred about the density of the cork? Use the following diagram
(a) The density of the cork is between that of Liquid A and Liquid B.
(b) The density of the cork is between that of Liquid B and Liquid C.
(c) The density of the cork is between that of Liquid C and Liquid D.
(d) No inference can be made.
Question. Which process is used in sewage treatment to kill infectious bacteria?
Question. How do bio-indicators determine the health of a water system?
(a) A few species of macro-invertebrates will be present in a healthy body of water.
(b) Many different species of macro-invertebrates will be present in a healthy body of water.
(c) No species of macro-invertebrates will be present in a healthy body of water.
(d) There is no relationship between the number of species of bio-indicators and the health of a body of water.
Question Which 2 sources of freshwater are used by municipalities for drinking water?
(a) oceans and icebergs
(b) groundwater and oceans
(c) rivers and groundwater
(d) icebergs and rivers
Question. What could be the main reason for strengthening water quality standards?
(a) human health issues
(b) natural animal issues
(c) industrial issues
(d) all of the above
Question. What is the main effect of excess nutrients in North Carolina waters?
(a) Algae growth does not change.
(b) Algae growth is low.
(c) Algae growth is high.
(d) Algae does not grow at all.
Question. What type of technology would be used to look at algae blooms?
(b) satellite imagery
Question. A landfill is most likely to directly pollute
(a) water vapor over the landfill
(b) precipitation about to fall on the landfill
(c) surface streams flowing to the landfill
(d) ground water under the landfill
Question. What is the relationship between dissolved oxygen and temperature?
(a) high temperature=low oxygen level
(b) high temperature=high oxygen level
(c) low temperature=low oxygen level
(d) low temperature=high oxygen level
Question. How are estuaries connected to oceanic organisms?
(a) Estuaries provide a nursery grounds for oceanic organisms.
(b) Estuaries provide sunlight for oceanic organisms.
(c) Estuaries provide primary food for oceanic organisms.
(d) Estuaries provide excess dissolved oxygen for oceanic organisms.
Question. How does pH negatively affect water sources?
(a) low pH is harmful
(b) high pH is harmful
(c) neutral pH is harmful
(d) both low and high pH is harmful
Question. Which is an example of water condensing?
(a) A puddle disappearing on a hot summer afternoon
(b) Sweat forming on your forehead after you do a lot of exercise
(c) Ice cubes melting when you put them out in the sun
(d) Dew forming on plants during a cold night
Question. Which layer of the ocean allows for photosynthesis to occur because of sunlight penetration?
(a) Buffer zone
(b) Surface zone
(c) Bathyl zone
(d) Abyssal zone
Question. How does this satellite image show the variations in temperature associated with an upwelling? Use the following diagram
(a) Darker gray areas represent colder water rising from the ocean floor.
(b) Darker gray areas represent warmer water rising from the ocean floor.
(c) Darker gray areas represent colder water sinking to the ocean floor.
(d) Darker gray areas represent warmer water sinking to the ocean floor.
Question. Which zone of the ocean extends from the low tide line to the edge of the continental shelf?
(a) neritic zone
(b) open ocean zone
(c) intertidal zone
(d) abyssal zone
Question. Looking at the diagram, where would a fisherman have the largest catch? Use the following diagram
(a) the shoreline
(b) the intertidal zone
(c) the ocean floor
(d) the area of upwelling
Question. Which of the following would scientists use as the BEST indicator of the health of a water system?
(a) temperature and turbidity
(b) water currents and turbidity
(c) convolution and turbidity
(d) submersion and turbidity
Question. Which statement is not a description of oceans?
(a) Oceans absorb and hold large quantities of solar heat.
(b) Oceans provide the least stable aquatic environment.
(c) Oceans contain a relatively constant supply of nutrient materials and dissolved gases.
(d) Oceans serve as a habitat for a large number of diverse organisms.
Question. Which of the following is the BEST example of a non-point source of water pollution?
(a) septic systems
(c) illegal dumping
(d) industrial discharges
Question. Which of the following would be the best model to show the interactions between water and the Sun's heat energy in cycles of precipitation?
(a) A light shines on an aquarium covered with glass, and water droplets form on the inside of the glass.
(b) A light shines on a closed cardboard box containing a plant.
(c) A light shines on a man's face. Droplets of sweat form on his face as he exercises.
(d) A light shines on a glass of iced tea Water droplets form on the outside of the glass.
Question. Why is ocean water more dense that fresh water?
(a) Ocean water contains more salt than fresh water.
(b) Ocean water is deeper that most bodies of fresh water.
(c) Ocean water has waves that move the water around.
(d) Ocean water contains more organisms than fresh water.
Question. If your community was planning to build a new sanitary landfill, what would be the most important aspect for the environment to consider in locating the landfill?
(a) the cost of the land
(b) the location of the groundwater
(c) the proximity to an industrial park
(d) the accessibility to a major highway
Question. Which of the following would be best used to study the drought conditions in a region?
(a) satellite imagery
(b) water witching
(d) ground truthing
Question. Which of the following correctly describes the connection between estuarian terrestrial and aquatic food web ? Use the following diagram
(a) The zooplankton is consumed by the small fish.
(b) The small fish is consumed by the large fish.
(c) The bird consumes the small fish.
(d) The bird consumes the cricket.
Question. What is the MAIN purpose in monitoring the hydrosphere?
(a) Even though the Earth is mainly covered in water, only a small percentage is usable.
(b) The Earth is ¾ covered with water so we need to know where the water is located.
(c) Water is a life sustaining force and we need to keep track of all the water on Earth.
(d) Both a and b
Question. What phenomenon would produce the darker areas moving away from the shore in the satellite image? Use the following diagram
Question. What can you infer about an organism that lives in the rocky Intertidal zone?
(a) They are able to withstand changes in tides.
(b) They are able to withstand changes in salinity.
(c) They are able to withstand changes in water temperature.
(d) They are able to withstand changes in air temperature.
Please click the below link to access CBSE Class 7 Social Science - Hydrosphere
Click for more Social Science Study Material ›