SSLC (English Medium) Class 8 - Tamil Nadu Board of Secondary Education Question Bank Solutions

What is a streamlined body? How does it help in the movement of animals that fly or swim in water?

Adam’s apple is the growth of the _____

Many adolescent boys and girls get pimples on the face, due to the secretions of _________ gland.

What do you mean by secondary sex characteristics?

The total force exerted by a body normal to the surface is called ______.

If the same force is made to act on a larger area, the pressure ______.

At higher altitudes, atmospheric pressure is ______.

Pressure can be increased by decreasing the force.

Pressure is directly proportional to the area of contact.

Analogy

Broader straps: ______:: Thin needles: ______.

Assertion: The pressure at the bottom of the sea is lesser than that near the surface.
Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid.

What is thrust?

Explain the variation of the pressure exerted by liquid with respect to the following factors.

1. Amount of liquid
2. Depth
3. Shape and size of the container

Explain why the cutting instruments are sharpened.

Cooking in a place located at a higher altitude is difficult. Why?

Why dams are made stronger and thicker at the bottom than at the top?

Why do scuba divers wear a special suit while they go into deep sea levels?

Determine the pressure when a force of 200 N acts on the area

1. 20 m²
2. 8 m²

Spherical mirrors are one form of ______ mirrors.

Name the two types of spherical mirrors.