Geography

What is the earths distance from the sun?

150 million km

Duration of rotation

23 hours and 56 minutes

Speed of rotation

0.46 km per second

Time for revolution

365 days and 6 hours

The diameter of the earth

510 million square km

Surface temperature of earth

15 Celsius

What are sources of sound ?

instruments that produce sound

What are the 3 ways in which sources of sound can be classified in

Vibration of membranes

Vibration of air columns

Vibration of strings

Name 3 instruments for vibration of air columns

Trumpet

Flute

Pipe organ

Give 3 examples for vibration of membranes

Drum

Tabla

Timpani

Give 3 examples for vibration of strings

Guitar

Violin

Banjo

What is frequency

The number of vibrations per unit time

What is the meaning of renaissance

The revival of something

What is medieval era

Period of about 1000 years

What did Johannes Gutenberg invent?

_{The printing press}

Name the river which protects the Kandyan kingdom

Mahaweli river

Name the 2 mountain ranges that used to protect the Kandyan kingdom

Udawaththa , hanthana

Name 2 mountain passes which protect the Kandyan kingdom

Balana and hunnasgiriya

Name 5 renowned kings of the Kandyan kingdom

Wimaladharmasooriya l

King senarath

King rajasinghe ll

King wimaladharmasooriya ll k

King keerthi Sri rajasinghe

Who is the last Kandyan kingdom king ?

King Sri wickrama rajasinghe

Who became the king of upcountry after king wimaladharmasooriya l

His cousin brother king senerath