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LEVEL 1

EFFECTS OF FRICTION & GRAVITY IN THE MOVEMENT OF OBJECTS

WE ARE THROWING A BALL UPWARDS, WHICH BELOW HAPPENS AS IT GOES UP...?

IT SLOWS DOWN

IT SPEEDS UP

ITS SPEED STAYS THE SAME

CORRECT!

WHEN AN OBJECT IS THROWN UPWARDS, IT SLOWS DOWN. THIS IS DUE TO ______.WHEN THE OBJECT REACHES THE TOP, IT WILL ____ AND THEN MOVE DOWNWARD. IT WILL GO ______ DOWNWARD. THIS IS DUE TO GRAVITY. (STOP/GRAVITY/FASTER)

LEVEL 1

EFFECTS OF FRICTION & GRAVITY IN THE MOVEMENT OF OBJECTS

IF WE THROW A BALL HORIZONTALLY, IN WHAT DIRECTION WILL IT MOVE...?

STRAIGHT

PARABOLA TO THE GROUND

UPWARDS

CORRECT!

WHEN AN OBJECT IS THROWN HORIZONTALLY, IT MOVES IN THAT DIRECTION BUT TOWARDS THE _____. IT MOVES IN A _______ DUE TO THE GRAVITATIONAL _____/GRAVITY. (FORCE/PARABOLA/GROUND)

LEVEL 1

EFFECTS OF FRICTION & GRAVITY IN THE MOVEMENT OF OBJECTS

WHY DOES A SHEET OF PAPER FALL DOWN SLOWER THAN A CRUMPLED PAPER?

AIR RESISTANCE

GRAVITY

IT FALLS AT THE SAME TIME

CORRECT!

AIR RESISTANCE IS THE FRICTIONAL _____ ON OBJECTS AS IT MOVES THROUGH THE AIR. OBJECTS WITH _____ SURFACE AREAS HAVE MORE AIR RESISTANCE. OBJECTS WITH LESS ______ AREA HAVE LESS HENCE IT MOVES DOWN FASTER. (SURFACE/LARGE/FORCE)

LEVEL 1

EFFECTS OF FRICTION & GRAVITY IN THE MOVEMENT OF OBJECTS

WHAT FORCE OCCURS WHEN TWO OBJECTS RUB AGAINST EACH OTHER...?

NOTHING

GRAVITATIONAL FORCE

FRICTION

CORRECT!

FRICTION IS THE _____ BETWEEN TWO OBJECTS AS THEY ___ AGAINST EACH OTHER. FOR EXAMPLE, WHEN WE HOLD A PENCIL OR WHEN CAR WHEELS MOVE ON A ROAD. BUT IT ALSO _____ OUT THE OBJECT (EX. WE NEED TO REPLACE CAR WHEELS FASTER) (WEARS/RUB/FORCE)

LEVEL 1

EFFECTS OF FRICTION & GRAVITY IN THE MOVEMENT OF OBJECTS

WHEN THERE'S LESS FRICTION IS IT EASIER OR HARDER TO MOVE...?

EASIER

HARDER

THE SAME

CORRECT!

____ FRICTION WILL MAKE IT ______ TO MOVE. WE CAN ______ FRICTION BY APPLYING LUBRICANTS LIKE OIL OR GREASE. OR ADD FRICTION BY INCREASING ROUGHNESS (EX. ON SHOES SOLES OR ON CAR WHEELS) (EASIER/LESS/REDUCE)

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LEVEL 2

KINDS AND FORMS OF ENERGY

WHAT IS THE ABILITY TO WORK CALLED...?

ENERGY

FORCE

SPEED

CORRECT!

ENERGY IS THE ______ TO WORK. THERE ARE DIFFERENT KINDS: ELECTRICAL LIGHT HEATSOUND CHEMICAL... BUT ENERGY CAN NEVER BE ______ ONLY CHANGED FROM ONE ____ TO ANOTHER. (ABILITY/FORM/CREATED)

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TRANSFORMATION OF ENERGY

WHICH OF THE BELOW IS USED IN SOLAR POWER...?

LIGHT -> ELECTRICAL

SOUND -> HEAT

LIGHT -> SOUND

CORRECT!

SOLAR POWER IS AN EXAMPLE OF ____ CONSERVATION (CHANGE FROM ONE ____ TO ANOTHER) EXAMPLES: RADIO - ELECTRICAL TO SOUND LIGHTBULB - ______ TO HEAT + LIGHT (FORM/ENERGY/ELECTRICAL)

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LEVEL 4

KINDS OF SIMPLE MACHINES

WHAT IS A DEVICE THAT MAKES WORK EASIER TO DO CALLED...?

AIR RESISTANCE

A SIMPLE MACHINE

ENERGY

CORRECT!

A SIMPLE MACHINE IS USED TO MAKE THINGS ______ TO DO. IT REDUCES THE ______ AND ENERGY NEEDED ALLOWING US TO FINISH IN ____ TIME. (LESS/EFFORT/EASIER)

LEVEL 4

KINDS OF SIMPLE MACHINES

WHAT IS THE ABOVE IMAGE...?

LEVER

PULLEY

SCREW

CORRECT!

IT IS A LEVER. THERE ARE THREE TYPES: FIRST-CLASS (EFFORT-FULCRUM-LOAD) SECOND CLASS (EFFORT-LOAD-FULCRUM) THIRD-CLASS (FULCRUM-EFFORT-LOAD)

LEVEL 4

KINDS OF SIMPLE MACHINES

WHAT ARE THE TWO ABOVE IMAGES...?

WEDGE & WHEEL AND AXLE

SCREW & INCLINED PLANE

PULLEY & GEAR

CORRECT!

PULLEYS AND GEARS ARE SIMPLE MACHINES. PULLEYS HELP US LIFT THINGS EASILY. THERE ARE THREE TYPES -> GEARS HELP US CHANGE SPEED AND DIRECTION (IN A ROTATION SUCH AS A BIKE)

LEVEL 4

KINDS OF SIMPLE MACHINES

WHAT ARE THE TWO IMAGES ABOVE...?

PULLEY & GEAR

SCREW & INCLINED PLANE

WEDGE & WHEEL AND AXEL

CORRECT!

SCREW AND INCLINED PLANE ARE SIMPLE MACHINES. SCREWS ARE USED TO FASTEN OR HOLD THINGS TOGETHER. INCLINED PLANE IS A RAMP (EX. STAIRS, SLIDE). IT MAKES IT EASIER TO MOVE AN OBJECT TO A HIGHER LOCATION.

LEVEL 4

KINDS OF SIMPLE MACHINES

WHAT ARE THE TWO IMAGES ABOVE...?

WEDGE & WHEEL AND AXLE

PULLEY & SCREW

SCREW & INCLINED PLANE

CORRECT!

WEDGE & WHEEL AND AXLE ARE SIMPLE MACHINES. WEDGES ARE USED TO CUT OR HOLD THINGS IN PLACE. (EX. DOORSTOP, KNIFE, AXE) WHEEL AND AXLE IS A WHEEL CONNECTED TO A ROD (AXLE). IT ALLOWS MOVEMENT OF LARGE OBJECTS WITH LESS EFFORT. (EX. DOORKNOB, TAP)

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LEVEL 5

PRACTICAL AND SAFETY USES OF MACHINES

MACHINES CAN CAUSE INJURIES HENCE SHOULD WE PRACTICE SAFETY WHILE USING MACHINES...?

YES

NO

MAYBE

CORRECT!

MACHINES CAN CAUSE INJURIES. SAFE USES ARE SOME OF THE BELOW:- DON'T PLAY WITH SHARP OBJECTS - CHECK THE ITEM IS STURDY BEFORE USE - CLEAN AND MAINTAIN TOOLS PROPERLY - IF HURT, USE FIRST AID OR SEEK MEDICAL ASSISTANCE.

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LEVEL 2

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LEVEL 6

CHANGES ON EARTH'S SURFACE DUE TO AN EARTHQUAKE

IN WHAT LAYER OF THE EARTH ARE TECTONIC PLATES...?

CRUST

INNER MANTLE

CORE

CORRECT!

TECTONIC PLATES ARE IN THE OUTER LAYER OF THE EARTH (CRUST). THE CRUST IS THIN. THE MANTLE IS THE SECOND LAYER AND IS MADE FROM SEMI-MOLTEN LAVA. THE TWO INNER LAYERS ARE THE OUTER AND INNER CORE. THE TEMPERATURE INCREASES AS WE GET CLOSER TO THE CORE.

LEVEL 6

CHANGES ON EARTH'S SURFACE DUE TO AN EARTHQUAKE

WHAT IS THE SHAKING OF THE EARTH'S SURFACE CAUSED BY TECTONIC PLATES CALLED...?

VOLCANO

EARTHQUAKE

TSUNAMI

CORRECT!

EARTHQUAKES ARE THE SHAKING OF EARTH'S SURFACE DUE TO SUDDEN TECTONIC PLATE MOVEMENT. MOST EARTHQUAKE OCCUR ON THE BOUNDARIES OF TECTONIC PLATES. UNDERSEA EARTHQUAKES CAN CAUSE TSUNAMIS. EARTHQUAKES ARE MEASURED BY A SEISMOGRAPH.

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LEVEL 7

CHANGES ON EARTH'S SURFACE DUE TO A VOLCANO

WHAT IS an opening in Earth's crust where magma breaks through CALLED...?

VOLCANO

EARTHQUAKE

TSUNAMI

CORRECT!

volcanoes an opening in Earth'sCrust where magma breaks through. VOLCANOES ARE FormED when - TECTONIC PLATES MOVE APART - one tectonic plate SLIDES under another VOLANOES ARE USUALLY ON THE BOUNDARIES OF TECTONIC PLATES.

NEW HIGH SCORE

999999

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