Materials metals and non-metals — Science STD 8 — Question

State whether the following statements are true or false:
The number of oscillations per second of a vibrating object is called its time-period.

State whether the following statements are true or false:
A piece of fresh potato does not conduct electricity at all.

State whether the following statements are true or false:
Sodium is a very reactive metal.

State whether the following statements are true or false:
A woman (mother) is responsible for the sex of her child.

State whether the following statements are true or false:
Rainwater is a non-conductor of electricity.

State whether the following statements are true or false:
An earthquake of magnitude 2 on Richter Scale is ten times as strong as an earthquake of magnitude 1 on the same Scale.

State whether the following statements are true or false:
The plates of earth's crust are continuously moving.

State whether the following statements are true or false:
Sound cannot travel in vacuum.

State whether the following statements are true or false:
Diffuse reflection means the failure of the laws of reflection of light.

Earthquakes can be predicted in advance.