year 9 physics
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transferred or transformed.
Which of the following is true about Newton's First Law of Motion?
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
What is the unit of measurement for electric current?
Ampere (A)
Which of the following is an example of an inclined plane?
Ramp
What is the SI unit for force?
Newton (N)
Which of the following is true about waves?
Waves transfer energy but do not transfer matter.
What happens to the resistance of a wire if its length is doubled?
The resistance doubles.
What is the formula to calculate velocity?
Velocity = Distance / Time
Which of the following is an example of a third-class lever?
Broom
What is the principle behind how a magnifying glass works?
It uses converging lenses to bend light rays and magnify the image.