Science for grade 6

WHAT CAUSES DAY AND NIGHT?

• THE ROTATION OF THE SUN

• THE ROTATION OF THE EARTH

• OUR SOLAR SYSTEM

• I DON'T KNOW

Answer explanation

Ans: THE ROTATION OF THE EARTH

WHICH OF THESE IS AN IRREVERSIBLE CHANGE?

• FERMENTATION OF A SUBSTANCE

• MELTING OF CHOCOLATE

• MIXING SULPHUR WITH IRON FILING

• NONE OF THE ABOVE

Answer explanation

Ans: Fermentation of a substance

WHAT IS A MIXTURE?

• A SUEBSTANCE FORMED BY A COMBINATION OF TWO OR MORE DIFFERENT SUBSTANCES

• SALT AND WATER

• SAND

• ALL OF THE ABOVE

Answer explanation

Ans: A SUEBSTANCE FORMED BY A COMBINATION OF TWO OR MORE DIFFERENT SUBSTANCES

WHICH OF THESE IS A SEPERATION OF MIXTURES...

• SUBLIMATION

• BURNING

• MELTING

• DISSOLVING

Answer explanation

Ans: SUBLIMATION

THE EARTH TAKES ___ TO ROTATE ON ITS OWN AXIS

• 10 DAYS

• 1 YEAR

• 24 HOURS

• 2 MINUTES

Answer explanation

Ans: 24 HOURS

WHAT IS CARBON?

• IT IS AN ELEMENT FORMED IN THE ENVIROMENT

• WATER

• A GAS

• DUST

Answer explanation

Ans: IT IS AN ELEMENT FORMED IN THE ENVIROMENT

WHAT ARE ATOMS?

• THEY ARE SOLIDS

• THEY ARE ANIMALS

• THEY ARE THE SMALLEST PARTICLES OF AN ELEMENT

• ALL OF THE ABOVE

Answer explanation

Ans: THEY ARE THE SMALLEST ARTICLES OF AN ELEMENT

CARBON AND OXYGEN MAKE CARBON DIOXIDE

• TRUE

• FALSE

Answer explanation

Ans: TRUE

WHAT IS WATER?

• IT IS A COMPOUND MIXTURE

• A LIQUID

• A SOLID

• A GAS

Answer explanation

Ans: IT IS A COMPOUND MIXTURE

WHAT ARE TAP ROOTS?

• THEY ARE ROOTS

• THEY ARE ROOTS WHICH GROW DIRECTLY FROM THE STEM

• I DON'T KNOW

Answer explanation

Ans: THEY ARE ROOTS WHICH GROWDIRECTLY FROM THE STEM