When dough is kneaded, it changes its shape due to :
Effect of chemical change
Effect of force
Effect of atmosphere
None of the above
Pressing the dough with hands changes its shape. This is a result of the force applied through hands.
The effect that force produces in a slingshot is change in shape of the body.
Which of the following statements is/are true? 1. Forces in the same direction add up. 2. Two forces in opposite directions resulting in net force, equal to their difference, in the direction of the larger force. 3. Change in either direction or magnitude of a force changes its effect. 4. When more than one force is acting on an object, the effect on the object is due to the net force acting on it.
(a) Name three types of substances in which an electric current can produce a chemical effect. (b) State some of the characteristics of chemical changes brought about by the chemical effect of electric current. (c) Why does an electric bulb glow when a current passes through it ?