Science

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Across
  1. 1. the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
  2. 3. coming closer together.
  3. 4. hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling.
  4. 5. tending to be different or develop in different directions.
Down
  1. 2. two plates slide past each other, horizontally.