Trace the copy of set suares(Geometry box) on a paper and mark the perpendicular edges.

Trace the copy of set squares(Geometry box) on a paper and mark the perpendicular edges.

Which of the following are models of parallel lines, perpendicular lines. i) Railway tracks. ii) Opposite edges of black board, iii) Adjacent sides of paper.

Consider that you are passing by a garbage disposal area and you immediately cover your nose. Arrange the events belown in a logical order by marking them from (i) to (v) to trace the events that happen in the nervous system from detection of foul smell (stimulus generation) to covering your nose (response). (i) At the end of the axon, electrical impulse releases chemicals. (ii) Stimulus received by the dendritic cells of a neuron sets off chemical reaction that creates an electrical impulse. (iii) Electrical impulse transmitted through cell body and axon. (iv) The chemicals cross the synapse and reach the next neuron. Similarly, the electrical impulse crosses several neurons. (v) Finally, the impulse is delivered from neuron to the gland that helps in recognition of the foul smell and muscle cells that help in covering the nose.

Consider that you are passing by a garbage disposal area and you immediately cover your nose. Arrange the events belown in a logical order by marking them from (i) to (v) to trace the events that happen in the nervous system from detection of foul smell (stimulus generation) to covering your nose (response). (i) At the end of the axon, electrical impulse releases chemicals. (ii) Stimulus received by the dendritic cells of a neuron sets off chemical reaction that creates an electrical impulse. (iii) Electrical impulse transmitted through cell body and axon. (iv) The chemicals cross the synapse and reach the next neuron. Similarly, the electrical impulse crosses several neurons. (v) Finally, the impulse is delivered from neuron to the gland that helps in recognition of the foul smell and muscle cells that help in covering the nose.

Fill in the blanks: The opposite edges of Geometry boxes are _____________

Draw a circle on a paper and cut it along its edge. Fold it into half and again fold it to one fourth to make folding marks as shown .You will observe a point in the middle. Mark this O. This is the centre of the circle. You can also indicate its radius.How many radii can you draw in a circle ?.