Classify the following curves as open or closed:

Classify the following curves as open. Simple closed and not simple closed.

Classify the following as open or closed curves:

Classify the following curves as (i) Open or (ii) Closed.

Classify the following as open curve, simple closed or not simple closed curve ? Identify which of the figures is a polygon. Give reasons. .

Classify the following as open, closed, or isolated system. a. A beaker containing as open, boiling water. b. A chemical reaction taking place in an enclosed flask. c. A cup of tea placed on a table. d. Hot water placed in perfectly insulated closed container. e. A thermos flask containing hot coffee.

Classify the following into open, closed and isolated system. Boiling of milk in a pan.

Classify the following into open, closed and isolated system. Boiling tea kept in a thermos.

Classify the following into open, closed and isolated system. Hot food kept in a sealed metallic container.

Classify the following into open, closed or isolated system : (i) Animals and plants (ii) A referigerator or a fridge (iii) A solar cooker

Draw rough diagrams to illustrate the following :(a) Open curve (b) Closed curve.