UNIT 5 WE CARE ABOUT MATTER

MATTER

100

WE MEASSURE MASS IN...

KILOGRAMS

200

WE MEASURE VOLUME IN...

M³ OR LITRES

300

WE USE A ________ CON CALCULATE THE MASS OF AN OBJECT

SCALE

400

WE USE A _________ TO CALCULATE THE VOLUMEN OF AN OBJECT

MEASURING CYLINDER

500

1 M³ IS EQUAL TO _____LITRES

1

DENSITY

100

WE MEASURE DENSITY ...

g/cm³

200

WATER HAS A DENSITY OF...

1 g/cm³

300

How do we measure the density?

Mass÷Volume

400

BUOYANCY OF AN OBJECT DEPENDS ON ITS...

DENSITY

500

WHY AN EMPTY GLASS BOTTLE DOESN´T SINK IN WATER?

BECAUSE THE AIR DENSITY IS LOWER THAN THE WATER

AIR

100

WHAT'S THE NAME OF THE GAS LAYER THAT SURROUNDS THE EARTH?

ATMOSPHERE

200

WHAT IS WIND?

AIR MOVING

300

WHAT DOES AIR CHANGE ACCORDING TO THE TEMPERATURE?

VOLUME

400

TELL 2 CHARACTERISTICS OF AIR

COLOURLESS, ODOURLESS, NO DEFINITE SHAPE, NO DEFINITE VOLUME

500

WHATS'S THE COMPOSITION OF AIR?

NITROGEN, OXYGEN AND OTHER GASES

AIRCRAFTS

100

IT'S FILLED WITH HYDROGEN OR HELIUM

AIRSHIP

200

THIS AIRCRAFT HAS BLADES

HELICOPTER

300

TELL 4 TYPES OF AIRCRAFTS

Hot Air ballon,airship, aereoplane and helicopter

400

FOR AN AEROPLANE TO FLY, IT HAS TO OVERCOME ITS OWN_______

WEIGHT

500

THE FORCE CAUSING AN UPWARD-PUSHING MOVING IS CALLED?

LIFT

FRICTION

100

WHAT SIMPLE MACHINE SUBSTITUTED THE ROLLER?

WHEEL AND AXLE

200

WHAT IS FRICTION?

TWO SURFACES THAT ARE IN CONTACT

300

WHAT 2 FACTORS AFFECT FRICTION?

WEIGHT OF THE OBJECT AND TYPE OF SURFACE

400

I can move a table if my force is ____ than the friction.

GREATER

500

TELL 3 DIFFERENT TYPES OF ENGINES

ELECTRIC, COMBUSTION AND STEAM