Forces Motion and Energy Grade 5

How does a force affect the motion of an object?

• A force affects the motion of an object by giving it superpowers

• A force affects the motion of an object by changing its color

• A force affects the motion of an object by changing its speed, direction, or both.

• A force affects the motion of an object by making it invisible

Explain the concept of inertia in relation to forces and motion.

• Inertia is the resistance of an object to change its shape when a force is applied.

• Inertia is the tendency of an object to resist changes in its motion, either staying at rest or moving at a constant velocity unless acted upon by an external force.

• Inertia is the tendency of an object to accelerate without any external force.

• Inertia is the ability of an object to change its motion without any external force.

What is the difference between balanced and unbalanced forces?

• Balanced forces result in no change in motion, while unbalanced forces cause a change in motion.

• Balanced forces cause objects to move faster, while unbalanced forces cause objects to slow down.

• Balanced forces are only present in stationary objects, while unbalanced forces are present in moving objects.

• Balanced forces always result in a change in motion, while unbalanced forces do not.

Describe the relationship between force and acceleration.

• Force causes deceleration

• Force and acceleration are inversely proportional

• The relationship between force and acceleration is defined by Newton's second law of motion: F = ma.

• Acceleration is not affected by force

What is the law of conservation of energy?

• Energy can be destroyed completely

• Energy cannot be created or destroyed, only transferred or transformed.

• Energy can be created out of nothing

• Energy can be transformed into matter

Give an example of potential energy being converted into kinetic energy.

• Roller coaster car going down a hill

• A car parked on a flat road

• A person standing still

• A rock falling from a cliff

Explain how energy is conserved in a closed system.

• Energy is conserved in a closed system because it follows the laws of thermodynamics only in open systems.

• Energy is conserved in a closed system because it leaks out into the environment.

• Energy is conserved in a closed system because it cannot be created or destroyed, only transferred or converted.

• Energy is conserved in a closed system because it can be created or destroyed at will.

What are the different forms of energy that can be conserved?

• Sound energy

• Kinetic energy

• Mechanical energy, thermal energy, chemical energy, nuclear energy, electromagnetic energy, gravitational potential energy

• Solar energy

How does friction affect the conservation of energy in a system?

• Friction is not related to the conservation of energy in a system.

• Friction has no impact on the conservation of energy in a system.

• Friction increases the conservation of energy in a system.

• Friction reduces the conservation of energy in a system.

Discuss the role of energy transformation in everyday activities.

• Energy transformation only occurs in specialized fields

• Energy transformation is not relevant in everyday activities

• Energy transformation has no impact on daily tasks

• Energy transformation plays a crucial role in everyday activities by converting energy from one form to another to power various tasks and devices.