Page 1 - Home Assignment
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SAI INTERNTIONAL SCHOOL
                                                        Class 8
                                                Home Assignment
                                                 Subject- Physics
                                        Ch- Some Natural Phenomena

                                          Subtopic- Structure of Earth




                   INSTRUCTIONS:
                         Please solve or paste the worksheet in the Physics Copy.
                         For Assertion& Reason question follow the following directions.
                          DIRECTION: Each of these questions contains an Assertion followed by Reason.
                          Read them carefully and answer the question on the basis of following options. You
                          have to select the one that best describes the two statements.
                          (a) If both Assertion and Reason are correct and Reason is the correct explanation of
                          Assertion.
                          (b) If both Assertion and Reason are correct, but Reason is not the correct explanation
                          of Assertion.
                          (c) If Assertion is correct but Reason is incorrect.
                          (d) If Assertion is incorrect but Reason is correct.
                          (e) If Assertion & Reason both are incorrect.
                       1.    Assertion: Tectonic plates are in continuous motion.                                  1
                            Reason: The outer core of earth is molten.
                       2.    Assertion: Outer core of Earth is molten.                                             1
                            Reason: The outer core is not hot.
                   Fill in the blanks
                       3.    Mantle is made of solid and heavy ________.                                           1
                       4.    The _________ layer of earth is called crust.                                         1
                       5.    Inner core is made of solid _______.                                                  1
                   True/False
                       6.    Earthquakes can be predicted.                                                         1
                       7.    The Earth’s crust is fragmented.                                                      1
                       8.    Draw a labeled digram showing structure of Earth.                                     2
                       9.    What are tectonic plates?                                                             1
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