Science 6th

A force of 500 Newton affects a lever of the first order and its force arm is 20 cm. Calculate the resistance given that the arm of the resistance equal 50 cm.

• 200 Newton.

• 20 Newton.

• 50 Newton.

• 200 cm.

The two phenomena of lunar & solar eclipses are repeated regularly and can be predicted.

• Right.

• Wrong.

The glass bulb of a light bulb contains oxygen gas.

• Right.

• Wrong.

All the following are from the first class levers except …….

• The seesaw.

• The scissors.

• Nutcracker.

• The crowbar.

At the beginning of total lunar eclipse, the Moon appears in ……….. colour

• Blue.

• White.

• Red.

• Yellow.

............ creates a pulling force that raises water and dissolved substances to the top of plants.

• Absorption.

• Transpiration.

• Evaporation.

• Respiration.

Root hairs absorb water by ……..

• Respiration.

• Selective permeability feature.

• Osmosis.

• Swallowing.

The arm of force is the distance between the effort force and the.......

• Resistance.

• Effort force.

• Lever.

• Fulcrum.

Umbra is the........

• Dark shadow area.

• Semi-shadow area.

• Lightened area.

• Sunny area.

When the Moon lies in a higher orbit than the Earth in front of the sun,...... happens

• Total solar eclipse.

• Partial solar eclipse.

• Annular solar eclipse.

• Lunar eclipse.