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types of forces
SCIENCE
GRADE-9 OCT 4, 2020
Grade-9
OCT 4, 2020
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Tekstslide
Science
Secondary Education
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SCIENCE
GRADE-9 OCT 4, 2020
Grade-9
OCT 4, 2020
Slide 1 - Tekstslide
INSTRUCTIONS
Keep the mic muted do not on unless instructed
Turn on your camera
Raise your hands while talking
write names in chat section
Maintain the online class decorum
Slide 2 - Tekstslide
What do you already know about force?
Slide 3 - Open vraag
Slide 4 - Tekstslide
Objectives
Describe force
Analyse different types of forces
Slide 5 - Tekstslide
Force
A push or pull on an object is a force
force changes object's speed and also its direction
Slide 6 - Tekstslide
COMPARE ??
Slide 7 - Tekstslide
Contact force- Is applied by one object into another that is touching it
Non contact force - not touching it
Slide 8 - Tekstslide
Slide 9 - Tekstslide
Slide 10 - Tekstslide
TENSION
ELASTIC
Slide 11 - Tekstslide
electrostatic force
gravity
Slide 12 - Tekstslide
which is a contact force?
A
A girl pulls the plug of an hair dryer from the socket
B
A leaf falls to the ground
C
A magnet pulls an a nail 2cm away
D
A small bit of paper is pulled towards an charged comb
Slide 13 - Quizvraag
Identify the given force
A
Gravity
B
magnetic
C
elastic
D
static
Slide 14 - Quizvraag
Gravity depends on which of the factor
A
mass of the object
B
shape of the object
C
motion of the object
D
all the above
Slide 15 - Quizvraag
An apple falls from a tree branch
A person uses a rope to pull a friend on a sled
A magnet holds a picture on a fridge
A person pulls a bow back and shoots the arrow
When a person stops pedalling, the bicycle slows down
Elastic
Tension
Friction
Magnetic
Gravity
Slide 16 - Sleepvraag
For this image given identify the force and predict whether it is contact or non -contact force
Slide 17 - Open vraag
For this image given identify the force and predict whether it is contact or non -contact force
Slide 18 - Open vraag
describe as a contact or non-contact forces-air resistance, friction, static electricity
Slide 19 - Open vraag
The force that stops the cyclist from skidding is
A
gravity
B
elastic
C
friction
D
magnetic
Slide 20 - Quizvraag
Josh is learning to dive. he is seen floating in the water. label the two forces
A
gravity and upthrust force of water
B
elastic and kinetic
C
magnetic and elastic
D
static and gravity
Slide 21 - Quizvraag
name two words learnt today
Slide 22 - Woordweb
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