Font size
WorksheetsSCI_FPS_SECOND TERM_3_1
Total questions: 9
Worksheet time: 32mins
Difference between the motion of a bicycle and a celing fan
The motion of a bicycle and the motion of a ceiling fan when switched on both involve circular motion, but there are significant differences between them:
Similarities:
Both involve rotational motion: Both the bicycle wheel and the ceiling fan blades rotate around an axis when in motion.
Both can produce mechanical work: The rotational motion of both the bicycle wheel and the ceiling fan blades can be harnessed to perform work, whether it's propelling the bicycle forward or circulating air in the room.
Differences:
Purpose: The primary purpose of a bicycle is transportation, while the primary purpose of a ceiling fan is to circulate air and provide cooling or ventilation in a room.
Energy source: The bicycle's motion is powered by the rider, who provides kinetic energy by pedaling, whereas the ceiling fan's motion is powered by electricity.
Direction of motion: The bicycle moves forward in a linear direction when in motion, whereas the ceiling fan rotates in a circular motion around a fixed axis.
Control: The speed and direction of the bicycle can be controlled by the rider through pedaling and steering, while the speed of the ceiling fan can be controlled using a switch or remote control.
External factors: The bicycle's motion can be affected by external factors such as terrain, wind, and friction, while the ceiling fan's motion is generally not influenced by external factors once it's switched on.
In summary, while both the bicycle and the ceiling fan involve rotational motion, they serve different purposes, have different energy sources, and are controlled and influenced by different factors.
Which type of motion can be harnessed to perform work in both a bicycle wheel and a ceiling fan?
Linear motion
Rotational motion
Oscillatory motion
Circular motion
What powers the motion of a bicycle?
Electricity
Pedaling
Solar energy
Wind power
What can affect the motion of a bicycle but generally not influence a ceiling fan's motion?
Terrain
Wind
Friction
Gravity
How does the motion of a bicycle differ from that of a ceiling fan?
Linear vs Circular motion
Vertical vs Horizontal motion
Clockwise vs Counterclockwise motion
Fast vs Slow motion
How can the speed of a ceiling fan be controlled?
Using a switch
Through pedaling
Using a remote control
By steering
What type of motion do both the bicycle wheel and the ceiling fan blades involve?
Linear motion
Circular motion
Oscillatory motion
Random motion
What is the primary purpose of a bicycle?
Transportation
Circulate air
Provide cooling
Ventilation
What is a similarity between the motion of a bicycle and a ceiling fan?
Which statement is a difference between the motion of a bicycle and a ceiling fan?
What is a factor that can influence the motion of a bicycle but not a ceiling fan?
Landform
How is the energy source for the motion of a bicycle different from that of a ceiling fan?
Bicycle motion is powered by the rider, while ceiling fan motion is powered by electricity.
Which aspect distinguishes the control of a bicycle from that of a ceiling fan?
A) Both can be controlled by voice commands.
B) The speed of a bicycle can be controlled using a remote control.
C) The direction of a ceiling fan can be controlled by pedaling.
D) The speed and direction of a bicycle can be controlled by the rider through pedaling and steering.
Give 2 examples of Periodic motion.
State 2 examples of rectilinear motion
Write 3 properties of a magnet.
Chapter 1
Properties of a magnet: Attractive property. A magnet attracts magnetic substances like iron, steel, nickel, and cobalt. This property is used to separate iron from a mixture and also to remove iron filings from the eyes.
Directive property: A freely suspended magnet always aligns itself in the north-south direction. This property is used in the construction of a mariner's compass.
Chapter 2
Poles exist in pairs: If a magnet is broken into two parts from the middle, then each part is found to be a magnet.
Chapter 3
Magnetic property is maximum at the poles. It is found that the property to attract magnetic substances is more at poles.
What happens when a magnet is broken into two parts from the middle?
Both parts lose their magnetic properties
One part becomes a magnet while the other loses its magnetic properties
Each part retains its magnetic properties
Both parts become stronger magnets
What is one of the properties of a magnet mentioned in the text?
Repulsive property
Conductive property
Attractive property
Reflective property
What is a directive property of magnets used in the construction of a mariner's compass?
Always aligns itself in the east-west direction
Always aligns itself in the up-down direction
Always aligns itself in a random direction
Always aligns itself in the north-south direction
Where is the magnetic property maximum?
At the poles
At the equator
At the center
At the edges
What property of a magnet is mentioned in the text?
attract iron objects/attractive property
What property of a magnet causes it to align in the north-south direction when freely suspended?
Directive property
What property of a magnet attracts magnetic substances like iron, steel, nickel, and cobalt?
Where is the magnetic property of a magnet maximum?
What is the significance of the magnetic property being more at the poles?
Earth's magnetic field lines converge at the poles, leading to a stronger magnetic field intensity.
If the magnet has no marking, then how will you find which end is North pole and which end is South Pole?
Finding directions using magnets.
Magnets have many properties which are useful to man. The most important property of magnets is their property of pointing towards the north and south directions. This distinguishing feature of magnets was first observed by the Chinese who used magnets to navigate through the seas.
The following activity demonstrates this property. Take a bar magnet and suspend it from a wooden stand using a thread. Now leave the magnet undisturbed until it reaches its rest position. Note down the direction in which the magnet points. Now rotate the magnet about one of its ends and leave it. Note down the position in which the magnet comes to rest. Repeat the process by rotating the magnet in different directions. It is found that the magnet comes to rest in the same position all the time. This direction is called the north-south direction.
Hence, using a magnetic compass and also observing the direction of the sun, it is possible to locate the north and south directions. The end of the magnet which points north is called the north pole, and the end which points south is called the south pole. This property of the magnet has been used in navigation since ages. Initially, people just used magnets suspended by threads for finding directions. Nowadays, a magnetic compass is used for the same purpose.
In which direction does the magnet come to rest?
East-West
North-South
Up-Down
Left-Right
Who were the first to observe the property of magnets?
Greeks
Romans
Chinese
Egyptians
What is the north pole of a magnet?
The end pointing north
The end pointing south
The end pointing east
The end pointing west
What property is demonstrated by an activity involving a bar magnet?
Conductivity
Magnetism
Density
Viscosity
How have magnets been used in navigation?
For ages
Recently
Never
Sometimes
What can a magnetic compass be used to locate?
East and West directions
North and South directions
Up and Down directions
Left and Right directions
What property do magnets have in terms of directions?
East and West
Up and Down
North and South
Left and Right
What helps locate north and south?
What does an activity with a bar magnet demonstrate?
A bar magnet when suspended always points North-south direction
Who were the first to observe the property of magnets and use them for navigation?
The north-south direction is consistent regardless of the magnet's orientation.
Composition of Air:
Chapter 1 The air consists of several gases. The average percentage of different gases in air is as follows.
Chapter 2 Nitrogen: 78% Oxygen: 21% Carbon dioxide: 0.03% Argon: 0.93% Other gases: 0.04%
Chapter 3 Air also contains dust particles, smoke, soot, ash, pollen, and sea salts suspended in it. It also contains water vapor. However, the amount of various components varies from place to place.
Why does the amount of various components in the air vary from place to place?
Due to differences in altitude
Because of variations in human activity
As a result of geographical location
Based on the time of day
What percentage of the air is made up of Carbon dioxide?
0.03%
0.93%
0.04%
0.93%
What are some of the particles found in air?
Dust particles
Pollen
Carbon dioxide
Nitrogen
What does the air consist of?
Nitrogen only
Oxygen only
Nitrogen: 78% Oxygen: 21% Carbon dioxide: 0.03% Argon: 0.93% Other gases: 0.04%
Carbon dioxide only
What is the most abundant gas in air?
What are some of the particles suspended in the air?
___________________ gas is used to extinguish fire.
Oxygen
Carbon dioxide
Nitrogen
Watervapour
What is the percentage of Oxygen in atmosphere?
What is the percentage of carbon dioxide in the atmosphere?
What is the concentration of other gases in the atmosphere other than
Nitrogen, Oxygen, and Carbon Dioxide?
What is essential for rusting in iron according to observations?
How does rust affect the appearance of iron objects?
What do windmills primarily use wind energy for?
