Question

7. The markings on the hull of the ship that indicate the level to which the ship can be submerged in
sea water are called
a. horizontal lines.
b. vertical lines.
C. skew lines.
d. Plimsoll lines.
8. For a given rise in temperature, the increase in density is maximum in case of
a. gases.
b. liquids.
C. solids.
d. none of these
9. When a substance is heated, its density
a. decreases.
b. increases.
c. remains the same. d. becomes zero.
10. In convection currents, hot air moves
a. upwards.
b. downwards.
c. to the left.
d. to the right.
1. Which of the following natural phenomena takes place due to convection currents?
a. land breeze
b. sea breeze
c. westerlies
d. all of these
. Fill in the blanks.
The
of a substance is the ratio of its mass and volume.
A
is a container with a spout below its top.
А
a small glass bottle with a stopper having a fine capillary tube, is used to
determine the density of liquids.
2​

Answer 1

Answer:

Grammar. Most singular nouns are made plural by simply putting an -s at the end. There are many different rules regarding pluralization depending on what letter a noun ends in. Irregular nouns do not follow plural noun rules, so they must be memorized or