تدريب عام: Unit 2 : Forces and Motion (Science) - Preparatory 2 - Science

السؤال 1

What was Galileo's key conclusion regarding object motion that challenged Aristotle's belief?

He established the universal law of gravitation.

He proved that heavy objects fall faster than light objects.

Objects tend to maintain their state of rest or motion unless acted upon by an external force.

Objects require a continuous force to remain in motion.

السؤال 2

How is the effort arm defined in relation to a lever?

It is the distance between the load and the fulcrum.

It is the total length of the lever.

It is the distance between the applied force and the fulcrum.

It is the force applied by the lever.

السؤال 3

Reducing friction allows an object to maintain its state of motion for a longer period.

True

False

السؤال 4

Newton's First Law is also known as the Law of Conservation of Energy.

True

False

السؤال 5

Which of the following is a primary scientific contribution attributed to Isaac Newton?

Formulating the laws of motion and the universal law of gravitation.

Inventing the first practical steam engine.

Discovering the principles of electromagnetism.

Developing the theory of relativity and quantum mechanics.

السؤال 6

Isaac Newton formulated the laws of motion and the universal law of gravitation, but his work on optics and light theory was not significant.

False

True

السؤال 7

What defines an inelastic collision between a moving object and a stationary object of the same mass?

The moving object stops, and the stationary object moves with the initial velocity.

The moving object transfers all its momentum to the stationary object.

Both objects bounce off each other, retaining all kinetic energy.

The moving object slows down, and both objects move together at half the initial velocity, with kinetic energy loss.

السؤال 8

What is the definition of the load arm in a lever system?

The total length of the lever rod.

The distance between the effort and the fulcrum.

The distance between the load and the fulcrum.

The point where the lever pivots.

السؤال 9

Pulleys primarily function to change the direction of force when lifting a load.

False

True

السؤال 10

What characterizes an inelastic collision between two objects?

The objects always separate after impact.

Kinetic energy is conserved.

Kinetic energy is lost, often converted into heat, sound, or deformation.

Objects bounce off each other without any energy loss.

السؤال 11

A hand broom is classified as a third-class lever because the effort is located between the fulcrum and the load.

False

True

السؤال 12

What significant contribution did Galileo make regarding the motion of objects?

He proposed the universal law of gravitation.

He developed a theory of colors using prisms.

He showed that objects tend to maintain their state of rest or motion unless acted upon by an external force.

He asserted that objects require continuous force to remain in motion.

السؤال 13

How do drones achieve upward flight according to Newton's laws?

By pushing air downwards (action), resulting in an equal upward push on the drone (reaction).

By creating a vacuum above the drone to pull it upwards.

By rapidly changing their mass to counteract gravity.

By generating magnetic repulsion from the ground.

السؤال 14

What type of lever are scissors?

First-class, with the fulcrum between the effort and the load.

A machine that always saves effort.

Third-class, with the effort between the fulcrum and the load.

Second-class, with the load between the fulcrum and the effort.

السؤال 15

The weight of a body is calculated by multiplying its mass by the acceleration due to gravity.

True

False

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تدريب عام: Unit 2 : Forces and Motion (Science) - Preparatory 2

What was Galileo's key conclusion regarding object motion that challenged Aristotle's belief?

How is the effort arm defined in relation to a lever?

Reducing friction allows an object to maintain its state of motion for a longer period.

Newton's First Law is also known as the Law of Conservation of Energy.

Which of the following is a primary scientific contribution attributed to Isaac Newton?

Isaac Newton formulated the laws of motion and the universal law of gravitation, but his work on optics and light theory was not significant.

What defines an inelastic collision between a moving object and a stationary object of the same mass?

What is the definition of the load arm in a lever system?

Pulleys primarily function to change the direction of force when lifting a load.

What characterizes an inelastic collision between two objects?

A hand broom is classified as a third-class lever because the effort is located between the fulcrum and the load.

What significant contribution did Galileo make regarding the motion of objects?

How do drones achieve upward flight according to Newton's laws?

What type of lever are scissors?

The weight of a body is calculated by multiplying its mass by the acceleration due to gravity.