Oracabessa High School



Subject: Integrated Science (CSEC Past Papers_ Grades 11 one and twoTopic: Terrestrial EnvironmentSub-topic: Weather and Natural disastersInstruction: Please complete the questions using notebooks, texts and internet to assist in finding answers. To communicate with your teachers do so by email or through the WhatsApp groups. Detecting and analysing the paths of 'fronts' is important for predicting theweather.What is a 'front’? ________________________________________________________________________________________________________________________________________________(1 mark)Four types of fronts are described in Table 1 (occluded, stationary, warm andcold fronts). Complete the table by writing the correct type of front in the emptycell. next to its proper description.TABLE 1. FOUR TYPES OF FRONTSFRONTDESCRIPTIONWhen cold air comes into a region of warmair and displaces it.When warm air comes into a region of coldair and displaces it.When a cold front overtakes a warm front.When a cold front warms up so that there isno temperature difference(4 marks)A cold front is passing through the Caribbean and a warm front is passing overthe U.S.A. Predict the weather in these two areas.The Caribbean: ________________________________________________________________________________________________________________________________________________________________________________________The U.S.A: ________________________________________________________ ____________________________________________________________________________________________________________________________________ (4 marks)(b) What is the difference between high tide and low tide?_______________________________________________________________________________________________________________________________________________________________________________________________________________(2 marks)(c)Figure 1 is a picture of a rocky sea shore. Shelled organisms, for example snails, arefound in regions A and B, while mainly sea weeds are found in region C.Figure 1: Rocky ShoreExplain why the shelled animals are more likely to be found in areas A and Bof the seashore shown in Figure 10.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(2 marks)Organisms living in region B, in Figure 1, usually have features which allowthem to cling to the rocks.Why are these features necessary?_______________________________________________________________(1 mark)Name ONE organism, other than snails, that is likely to be found in region B inFigure 1._______________________________________________________________(1 mark)15 marks (a) Sandra lives on the island of Montserrat. Her father buys an electronic weather station which he installs and connects to the computer in the air conditioned computer room. There is a small sensor which has been hung on a nail in the backyard shed. It collects weather data (temperature, pressure and humidity) and sends the data to the min unit which attempts to predict the weather.What kind of weather would mostly be predicted when the sky is full of grey nimbus clouds?_______________________________________________________ (1 mark)What kind of weather expected when the atmospheric pressure is rising? _______________________________________________________ (1 mark)The weather station indicates a forecast of rain and the news announces that the hurricane watch has been upgraded to a hurricane warning. State three appropriate activities that Sandra’s family should undertake to prepare for the hurricane._____________________________________________________________________________________________________________________________________________________________________________________________(3 marks)Explain how a hurricane develops?_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ (3 marks) (b) In 1995, the Soufriere Hills volcano erupted. (i) Identify TWO hazardous materials produced by the volcano and for each material suggest One effect on Sandra’s community. Write your answer in the following table.(4 marks)Hazardous MaterialEffect1.2.(ii)Kick-em Jenny is a live submarine volcano located near northern Grenada. Suggest ONE effect of an eruption of the volcano on the ecology of the coast of Grenada. ____________________________________________________________________________________________________________________________________________________________________________________ (2 marks) ................
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