Motion and Measurment Flashcards
Class 6
What modes of transport did people use before the invention of the wheel?
They moved on foot and used animals for transportation
Initially, people carried goods on their backs and used boats for water transport.
What major invention changed modes of transport significantly?
The invention of the wheel
The design of the wheel evolved over thousands of years.
What were early boats made from?
Simple logs of wood
Early boats had hollow cavities made in the logs.
What transportation methods were developed after the steam engine?
- Railroads for steam engine-driven carriages
- Automobiles like motor cars, trucks, and buses
- Motorized boats and ships
- Aeroplanes
The 20th century saw advancements such as electric trains and spacecraft.
How can we determine how far a place is?
By knowing the distance, we can decide on the mode of transport
This involves understanding how far we can walk or if we need to take a bus or train.
What is a unit of measurement?
A known fixed quantity used for comparison
Measurement results consist of a number and a unit.
What is the SI unit of length?
Metre
The International System of Units (SI) provides standard measurements.
Fill in the blank: The length of the foot was commonly used as a _______.
unit of measurement
Different regions had slight variations in the length of the foot.
True or False: Everyone’s body parts are the same size, making them suitable for standard measurements.
False
Variations in body part sizes can lead to confusion in measurements.
What must you do if the zero mark on a scale is broken?
Use another full mark and subtract its reading from the other end
This ensures accurate measurement despite the broken zero mark.
How should one position their eye for accurate measurement?
Directly in front of the point being measured
Misalignment can lead to incorrect readings.
What is the purpose of using a thread when measuring a curved line?
To measure the length of the curved line accurately
The thread can follow the contour of the curve.
List two methods used for measuring distances in daily life.
- Using a metre scale
- Using a measuring tape
Different measuring devices are suitable for different objects.
What is a common problem when using non-standard units like handspan?
Measurements can vary between individuals
This inconsistency can lead to confusion in communication of measurements.
What is a cubit?
The length from the elbow to the fingertips
It was used in ancient Egypt as a unit of length.
Fill in the blank: The length of a yard was measured by the distance from the end of the outstretched arm to the _______.
chin
This method of measurement was common in various cultures.
What are some activities students can perform to measure classroom dimensions?
- Measure length and breadth using foot
- Measure width of a table using handspan
These activities help students understand measurement concepts practically.
What is the metric system?
A standard unit of measurement created for uniformity
It was developed in France in 1790.
What is the difference between a metre, centimetre, and millimetre?
- 1 metre = 100 centimetres
- 1 centimetre = 10 millimetres
These units are used for different scales of measurement.
What is the method used to measure the length of a curved line?
Use a thread to trace the curve and measure its length against a scale.
This method provides a practical way to measure irregular shapes.
What is the significance of standard units in measurement?
Standard units allow for accurate and consistent communication of measurements.
Without standard units, measurements can lead to confusion.
List some examples of objects that can be at rest.
- House
- Table
- Clock
Objects at rest do not change their position over time.
List some examples of objects that can be in motion.
- A flying bird
- Second’s hand of the clock
- A moving train
These objects change their position over time.
What is the definition of motion?
Motion is a change in the position of an object with time.
This concept is fundamental in understanding physical phenomena.
What type of motion is characterized by movement along a straight line?
Rectilinear motion.
Examples include vehicles on a straight road and sprinters in a race.
What is circular motion?
Circular motion occurs when an object moves along a circular path.
Examples include the motion of a stone tied to a string being whirled around.
What is periodic motion?
Periodic motion is when an object repeats its motion after a fixed interval of time.
Examples include a pendulum or a child on a swing.
How does the motion of a clock differ from that of a moving object?
The clock itself does not move from one place to another, but its hands exhibit circular motion.
The hands of the clock rotate around a fixed point.
What are some examples of periodic motion?
- Motion of a pendulum
- Motion of a child on a swing
- Vibrations of guitar strings
Periodic motion can be observed in various everyday activities.
What is the SI unit of length?
Metre.
The International System of Units (SI) is used globally for measurements.
Fill in the blank: One metre is __________ cm.
100 cm
This conversion is essential for understanding metric measurements.
Fill in the blank: Motion of a child on a swing is __________.
Periodic motion.
This motion repeats after a set time interval.
Why can a pace or a footstep not be used as a standard unit of length?
They are not consistent and can vary greatly from person to person.
This inconsistency leads to confusion in measurements.
Arrange the following lengths in increasing magnitude: 1 metre, 1 centimetre, 1 kilometre, 1 millimetre.
1 millimetre, 1 centimetre, 1 metre, 1 kilometre.
Understanding the hierarchy of metric units is crucial for measurement.
What is an example of a combination of different types of motion?
A ball rolling on the ground undergoes both rotational and rectilinear motion.
This illustrates the complexity of motion in real-world scenarios.
What do we observe about motion in our environment?
Motion is everywhere, from animals to natural phenomena like rivers and the moon.
Recognizing motion helps us understand the dynamics of the world around us.
What is the activity to observe the motion of ants?
Spread sugar on paper and mark the position of ants at intervals.
This visualizes the concept of motion through tracking changes in position.
