MATTER
WE MEASSURE MASS IN...
KILOGRAMS
WE MEASURE DENSITY ...
g/cm3
WHAT'S THE NAME OF THE GAS LAYER THAT SURROUNDS THE EARTH?
ATMOSPHERE
IT'S FILLED WITH HYDROGEN OR HELIUM
AIRSHIP
WHAT SIMPLE MACHINE SUBSTITUTED THE ROLLER?
WHEEL AND AXLE
WE MEASURE VOLUME IN...
M3 OR LITRES
WATER HAS A DENSITY OF...
1 g/cm3
WHAT IS WIND?
AIR MOVING
THIS AIRCRAFT HAS BLADES
HELICOPTER
WHAT IS FRICTION?
TWO SURFACES THAT ARE IN CONTACT
WE USE A ________ CON CALCULATE THE MASS OF AN OBJECT
SCALE
How do we measure the density?
Mass÷Volume
WHAT DOES AIR CHANGE ACCORDING TO THE TEMPERATURE?
VOLUME
TELL 4 TYPES OF AIRCRAFTS
Hot Air ballon,airship, aereoplane and helicopter
WHAT 2 FACTORS AFFECT FRICTION?
WEIGHT OF THE OBJECT AND TYPE OF SURFACE
WE USE A _________ TO CALCULATE THE VOLUMEN OF AN OBJECT
MEASURING CYLINDER
BUOYANCY OF AN OBJECT DEPENDS ON ITS...
DENSITY
TELL 2 CHARACTERISTICS OF AIR
COLOURLESS, ODOURLESS, NO DEFINITE SHAPE, NO DEFINITE VOLUME
FOR AN AEROPLANE TO FLY, IT HAS TO OVERCOME ITS OWN_______
WEIGHT
I can move a table if my force is ____ than the friction.
GREATER
1 M3 IS EQUAL TO _____LITRES
1
WHY AN EMPTY GLASS BOTTLE DOESN´T SINK IN WATER?
BECAUSE THE AIR DENSITY IS LOWER THAN THE WATER
WHATS'S THE COMPOSITION OF AIR?
NITROGEN, OXYGEN AND OTHER GASES
THE FORCE CAUSING AN UPWARD-PUSHING MOVING IS CALLED?
LIFT
TELL 3 DIFFERENT TYPES OF ENGINES
ELECTRIC, COMBUSTION AND STEAM