Olympiad Test: Force and Energy - Class 6 MCQ

Read the given statements and choose the correct option.
Statement 1: Elastic force is what allows a stretched rubber band to return to its original shape.
Statement 2: Elastic force can only be observed in natural materials, not in man-made objects.

What happens to a floating object due to buoyant force?
Statement 1: It is pushed downwards into the water.
Statement 2: It experiences an upward thrust.

Which statement about kinetic energy is correct?
Statement 1: Kinetic energy is the energy due to an object's position.
Statement 2: Kinetic energy is the energy an object has due to its motion.

Consider these statements about levers.
Statement 1: In a first class lever, the fulcrum is between the load and the effort.
Statement 2: In a third class lever, the load is between the fulcrum and the effort.

What does the law of conservation of energy state?
Statement 1: Energy can be created and destroyed.
Statement 2: Energy can only be transformed from one form to another.

Which statement is true about simple machines?
Statement 1: Simple machines include electronic devices like computers.
Statement 2: Simple machines make work easier by changing the direction or magnitude of a force.

Regarding the pulley, which statement is correct?
Statement 1: A fixed pulley changes the direction of the applied force.
Statement 2: A movable pulley decreases the amount of effort needed to lift an object.