Grade 4 Science And Technology – Quiz
1. Which of the following is an example of a contact force?
Friction is a force that occurs when two surfaces rub against each other. It is a contact force because it requires direct contact between the surfaces.
2. Which type of energy is associated with the motion of an object?
Mechanical energy is the energy associated with the motion of an object. It includes both kinetic energy (energy of motion) and potential energy (energy stored in an object).
3. Which of the following is an example of potential energy?
A stretched rubber band has potential energy because it has the potential to do work when released. Potential energy is stored energy that can be converted into kinetic energy.
4. What happens to an object when an unbalanced force is applied to it?
When an unbalanced force is applied to an object, the object will accelerate in the direction of the force. This means it will speed up.
5. Which of the following is an example of a non-contact force?
Magnetic force is a non-contact force because it can act on objects without any physical contact. It can attract or repel objects from a distance.
6. Which type of energy is associated with objects at rest?
Potential energy is the energy stored in an object at rest. It has the potential to do work when it is in motion or when the position of the object changes.
7. What is the SI unit of force?
The SI unit of force is the Newton, named after Sir Isaac Newton. It is defined as the force required to accelerate a 1 kilogram mass at a rate of 1 meter per second squared.
8. Which of the following is an example of kinetic energy?
Kinetic energy is the energy of motion. A moving bicycle has kinetic energy because it is in motion and can do work due to its velocity.
9. What is the energy of an object due to its position or condition?
Potential energy is the energy of an object due to its position or condition. It is stored energy that can be converted into other forms of energy.
10. What is the ability to do work or cause change?
Energy is the ability to do work or cause change. It comes in different forms such as kinetic, potential, thermal, and chemical energy.
11. What is the unit of measurement for force in the metric system?
Newton is the standard unit of force in the metric system.
12. Which of the following is a form of potential energy?
Chemical energy is stored in the bonds of atoms and molecules.
13. What happens to an object when a force is applied in the direction of its motion?
When a force is applied in the direction of motion, the object accelerates or speeds up.
14. Which of the following is an example of a contact force?
Friction is a contact force that acts when two surfaces are in contact with each other.
15. What type of energy is stored in an object that is held above the ground?
When an object is held above the ground, it possesses elastic potential energy due to its position.
16. Which of the following is an example of kinetic energy?
Kinetic energy is the energy possessed by a moving object.
17. What is the law that states: 'An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force'?
Also known as the Law of Inertia, this law describes the behavior of objects in motion.
18. Which type of energy is associated with the position or configuration of an object?
Potential energy is stored energy that an object possesses based on its position or configuration.
19. What happens to the potential energy of an object when it is lifted higher above the ground?
When an object is lifted higher, its potential energy increases due to its new position relative to the ground.
20. Which law of motion states: 'For every action, there is an equal and opposite reaction'?
This law explains how forces always occur in pairs, with one force acting in one direction and an equal force acting in the opposite direction.
21. What is the unit of measurement for force?
Newton is the unit of measurement for force, named after Sir Isaac Newton.
22. Which of the following is a type of energy that comes from moving water?
Hydropower is a renewable source of energy that comes from moving water, such as rivers or waterfalls.
23. Which type of energy is produced by the Sun?
Solar energy is the type of energy produced by the Sun and can be converted into electricity using solar panels.
24. Which of the following is an example of potential energy?
A stretched rubber band has potential energy because it has the potential to do work when released.
25. Which type of energy is stored in food?
Chemical energy is stored in food and can be released through digestion to fuel our bodies.
26. What happens to an object when an unbalanced force is applied to it?
When an unbalanced force is applied to an object, it accelerates in the direction of the force.
27. Which of the following is an example of kinetic energy?
A moving car has kinetic energy because it is in motion.
28. What is the energy of motion called?
The energy of motion is called kinetic energy, which depends on the object's mass and velocity.
29. Which of the following is an example of mechanical energy?
Wind energy is an example of mechanical energy, as it comes from the movement of air.
30. What is the term for the energy stored in an object due to its position or condition?
Potential energy is the energy stored in an object due to its position or condition, like a raised weight or a compressed spring.