5.
2
Gravity
What is Gravity?
Gravity is the force that pulls
objects towards the centre.
Gravity makes things have weight
When we drop things, they fall down.
Down is always towards the centre of the Earth.
Gravity in Action
Planets orbit
Objects fall to
the ground
Astronauts float
in space
Turn & What do you think
Talk would happen if we
did not have gravity?
Question page 133
1.In which direction do things fall?
To the centre of the Earth
Question page 133
2. What is the force that pulls things to the
centre of the Earth.
Answer : Gravity
Question page 133
3. Why do things not fall off the Earth?
Because all things attract by Earth’s gravity
Experiment : Think like a scientist page 133
Do heavier objects fall faster?
1. measure 5 things with a scale (use different
size and weight)
2. drop the things at the same height and
record the duration when the thing gets
the floor using stopwatch.
3. Make the table and write the conclusion.
Do heavier objects fall faster?
No Objects Weight Time of
dropping
1 Board eraser 19 g 0.78 s
2 Nail cutter 45 g 0.79 s
3 pencil 3g 0,70 s
4 Sci TB 410 g 0.86 s
Result : No, actually all things are attracted equally by the gravity
Watch this video :
https://youtu.be/ZgqJ5wQF944?si=HRJJiI9u5XvqKcKw
18 April : Lesson 5.3 Friction
19 April : Lesson 5.4 Amazing Magnets
25 April : Lesson 5.5 Magnetics Materials
• Experiment : think like scientist 1 page 147
26 April : Trial Test
• Experiment : think like scientist 1 page 147
10 May : Quiz Unit 5 + Review Unit 5 (for ASAT)
• Experiment : think like scientist 1 page 147
True or False
Gravity only exists on Earth.
True False
The force of gravity between two objects
decreases as the distance between them increases.
True False
Gravity is the force that pulls
objects toward each other.
True False
Multiple Choice
What causes objects to fall towards the Earth?
a) Magnetism c) Gravity
b) Friction d) Air resistance
Which of the following is true about the force of gravity?
a) It increases with the c) It is stronger on
distance between objects. smaller planets.
b) It only affects objects d) It pulls objects
with a lot of mass. towards each other.
What would happen to your weight if you
were on a planet with stronger gravity than Earth?
a) It would decrease. c) It would increase.
b) It would stay the same. d) It would depend on
the mass of the person.
Which factor affects the strength of the
gravitational force between two objects?
a) Size of the objects c) Temperature of the objects
b) Color of the objects d) Shape of the objects
Fill in the Blank
Gravity keeps ________ in
their orbits around the Sun.
Tides in the ocean are caused by the
gravitational pull of the ________.
Astronauts float in space because
the difference in _________.
Answers
True or False
1. Gravity only exists on Earth- False
2. The force of gravity between two objects decreases as the distance between them increases- True
3. Gravity is the force that pulls objects toward each other- True
Multiple Choice
1. What causes objects to fall towards the Earth? A
2. Which of the following is true about the force of gravity? D
3. What would happen to your weight if you were on a planet with stronger gravity than Earth? C
4. Which factor affects the strength of the gravitational force between two objects? A
Fill in the Blank
1. planets
2. moon
3. gravity
Resources
