Exploring Forces — Science STD 8 — Question

Name two metals which are usually electroplated on cheaper metals for making jewelry (or ornaments).

In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. Taking out paste from a toothpaste tube.

Which liquid metal is used for making thermometers?

Unscramble the underlined words in the following sentences. The overgrowth of sumselc in xalnyr leads to the hoarse voice in adolescent boys.

Does the number of cells depend upon the size of the organism?

Which product of coal is used in the extraction of metals ?

Out of husk particles or iron sticks, which will float on water?

An element forms an oxide which is basic in nature. State whether the element is a metal or a non-metal?

What happens if two plane mirrors are used in combination?

Read the following statements and write the appropriate term against each statement. I Control the functions of a cell. Who am I?