Available Answers

1. 1.

   Fill in the blanks.

   1. The hot molten rock inside the earth is called _______________.
   2. Sandstone contains the mineral _______________.
   3. _______________ smells like wet mud.
   4. Limestone contains the mineral _______________.
   5. _______________ is a rock used to make surgical instruments.
2. 2.

   Complete the flow chart given below.

   

3. 3.

   Choose the correct answer.

   1. The molten rock inside the earth is called _______________.
      1. lava
      2. magma
      3. granite
   2. Molten rock that comes out during the eruption of a volcano is called _______________.
      1. magma
      2. lava
      3. water
   3. A very light that is used as a body scrubber is _______________.
      1. basalt
      2. granite
      3. pumice
   4. Slate is a _______________.
      1. metamorphic rock
      2. sedimentary rock
      3. igneous rock
   5. zinc is a _______________.
      1. metallic mineral
      2. non--metallic mineral
      3. none of these
4. 4.

   Answer in one word.

   1. A rock used by dentist to scrub teeth
   2. Fuel formed by the accumulation of living organisms for many years
   3. A rock that contains the minerals mica, quartz and feldspar
   4. A metamorphic rock that glitters due to the presence of mica in it
   5. A rock used to make blackboards and statues
   6. A rock used to make chalk
5. 5.

   Classify the following rocks under the correct categories.

   Sandstone	Shale	Quartzite	Pumice
   Granite	Slate	Gneiss	Obsidian
   Conglomerate	Limestone	Marble	Basalt

    

   Igneous rocks	Sedimentary rocks	Metamorphic rocks

    

6. 6.

   How are igneous rocks formed?