science prim 5

1. The image of an object that is formed through narrow holes is ..............................

• a. minimized

• b.inverted.

• c. enlarged.

• . (a) and (b).

Black objects …………………………..

• reflects all colours

• absorbs all colours

• no correct answer

• reflects red colour

To separate insoluble solid from solution, we use ………………

• filtration process

• evaporation

• grinding process

• separating funnel

Factors affecting solubility process.

• Quantity of solvent

• Temperature

• Stirring

• All of the previous

………A mixture in which the solute breaks down into its most basic particles and spread evenly though out the solvent.

• a. solute

• b. solution

• c. solvent

• d. salty

The………….…can simulate the color of the surrounding environment.

• bee

• crocodile

• ascaris

• chameleon

the ………… led to the extinction of dinosaurs.

• d. changing of natural circumstances (conditions)

• c. man interference

• b. disappearance of organisms

• a. appearance of new organisms.

The lawless lamprey feeds by sucking blood of its host which is a ………………

• frog

• symbiosis

• predation

• parasitism

is the balance between components of ecosystem (…………………….)

• ecosystem

• environmental balance

• predation

• saprophytism