WorksheetsScience CAT 3rd Term
Total questions: 20
Worksheet time: 13mins
What causes the different seasons on earth?
Rotation of the earth on its axis
Tilt of the earth's axis and revolution around the sun
Distance of the earth from the sun
Movement of the moon
What is the purpose of space travel?
To find new planets to live on
To explore the universe and learn more about it
To travel faster than light
To colonize the moon
Which of the following is NOT a danger of space travel?
High cost
Risk of fire due to gas leakage
Decrease in gravitational pull
Possibility of mission failure
What happens during a lunar eclipse?
The moon comes between the earth and the sun
The sun comes between the earth and the moon
The earth comes between the sun and the moon
The moon blocks the sun's light completely
How long does it take the earth to complete one revolution around the sun?
24 hours
30 days
365 days
88 days
Which planet has the shortest year?
Mercury
Venus
Earth
Mars
What instrument is used to measure force?
Spring balance
Thermometer
Ruler
Stopwatch
Which of the following is NOT an effect of force?
It causes objects to move.
It changes the color of an object.
It stops a moving object.
It changes the shape of an object.
Which of the following is an example of a non-contact force?
Tension force
Gravitational force
Frictional force
Normal force
If the mass of an object is 10 kg and the acceleration due to gravity is 10 m/s², what is the gravitational force?
10 N
100 N
20 N
50 N
What happens when balanced forces act on an object?
The object moves faster.
The object stays in the same place.
The object changes direction.
The object floats.
What is frictional force?
A force that pushes objects apart.
A force acting against the motion of objects in contact.
A force that speeds up an object.
A force that only exists in liquids.
Which of these is NOT an advantage of friction?
It helps us walk without slipping.
It allows nails to hold walls.
It causes machines to wear out quickly.
It helps in writing on paper.
What is one of the uses of satellites?
Producing energy for earth
Navigating using GPS
Exploring black holes
Keeping planets in orbit
Which of these is an example of an artificial satellite?
Hubble Space Telescope
Moon
Mars
Comet
What happens when unbalanced forces act on an object?
The object stops moving.
The object begins to move in the direction of the larger force.
The object remains stationary.
None of the above.
What is the nature of gravitational force?
Always repulsive
Always attractive
Both attractive and repulsive
None of the above
What is the S.I. unit of force?
Joules
Newton
Meter
Kilogramme
Why do astronauts feel weightlessness in space?
no contact force
they lose weight
no weight
Zero atmosphere
What is another name of weightlessness?
additional gravity
zero gravity
loss of weight
