REVISION QUESTIONS

WHAT IS A NERVE IMPULSES?

• AN ELECTRICAL SIGNAL THAT MOVES THROUGH NERVE CELLS

• ELECTROSTATIC CHARGES THAT MOVES THROUGH BODY CELLS

• A SOUND SIGNAL THAT MOVES THROUGH THE BODY.

• INFORMATION THAT CAN ONLY BE DELIVERED TO THE BRAIN.

WHAT IS THE FUNCTION OF THE CRANIUM?

• PROTECTS THE SPINAL CORD

• PROTECT THE BRAIN

• PROTECTS THE SPINAL NERVES

• PROTECTS THE CRANIAL NERVES

CHOOSES THE CORRECT ACTIONS FOR VOLUNTARY ACTION AND INVOLUNTARY ACTION.

• DOING SPORT/ CLEANING HOUSE

• OPENING THE DOOR / PERISTALSIS

• PRODUCTION OF SALIVA/ SNEEZING

• CONTROLS GLUCOSE LEVEL IN THE BLOOD

WHAT TYPE OF LENS IS USED TO CORRECT SHORT-SIGHTEDNESS

• BICONCAVE LENS

• CONVEX LENS

• CONCAVE LENS

• CYLINDRICAL LENS

WHICH COMPOUND CONSIST OF LEAD AND SULPHUR?

• QUARTZ

• PYRITE

• GALENA

• HEMATITE

WHICH ELEMENT IS NON-REACTIVE AND DOES NOT COMBINE EASILY WITH OTHER ELEMENT?

• SILVER

• IRON

• ALUMINIUM

• LEAD

THE STATEMENTS BELOWS ARE ABOUT A TYPE OF ENERGY SOURCE.

-THE MAIN SOURCE OF ENERGY

-PRODUCES HEAT AND LIGHT ENERGY

-DOES NOT CAUSE POLLUTION

WHAT IS THE ENERGY SOURCE?

• NUCLEAR ENERGY

• HYDRO ENERGY

• BIOMASS ENERGY

• SOLAR ENERGY

WHICH OF THE FOLLOWING USES SINGLE -PHASE WIRING?

• INDUSTRIAL AREA

• SHOPPING MALL

• HOTEL

• HOMESTAY

AN ELECTRIC IRON HAS A RATING OF 1000 W, 240V. CALCULATE THE ELECTRIC CURRENT THAT FLOWS IN THE IRON.

• 0.41 A

• 4.16 A

• 4.50 A

• 41.5 A

A LOAD BEING PULLED FOR 1.5 m WITH 20 N OF FORCE.

CALCULATE THE WORK DONE.

• 3 J

• 30 J

• 35 J

• 25 J