Forces and Motions
What is the force that causes objects to fall to the ground?
GRAVITY
What is the nearest celestial body to Earth?
Moon
What is the unit of measurement for energy?
Joule
What is the term for the distance between two adjacent peaks of a wave?
wavelength
What is the unit of measurement for electric current?
Ampere
What is the difference between speed and velocity?
Speed is the distance traveled by an object in a given amount of time, while velocity is the speed of an object in a specific direction.
What is the term for the imaginary line around which Earth rotates?
axis
What is the term for the energy of motion?
kinetic energy
What is the name of the type of waves that do not require a medium to travel through
electromagnetic waves
What is the term for the flow of electric charge?
electric current
What is the term for the force that opposes the motion of two surfaces that are in contact with each other
FRICTION
What is the process by which the Earth's tectonic plates move?
The process by which the Earth's tectonic plates move is called plate tectonics.
What is the difference between renewable and non-renewable energy sources?
Renewable energy sources are those that can be replenished naturally and indefinitely, while non-renewable energy sources are those that are finite and will eventually be depleted.
What is the name of the range of electromagnetic waves that are visible to the human eye
visible spectrum
What is Ohm's Law?
Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them.
What is the law that states that for every action, there is an equal and opposite reaction?
Newton's third law of motion
This term refers to the study of the Earth's physical features, including its landforms, geology, and natural resources.
geology
What is the Law of Conservation of Energy?
The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.
What is the term for the bouncing back of light waves from a surface?
REFLECTION
What is the difference between DC and AC electricity?
DC (direct current) electricity flows in one direction only, while AC (alternating current) electricity changes direction periodically.
A 2000 kg car is traveling at a speed of 25 m/s when it collides with a stationary truck of mass 5000 kg. If the collision is perfectly inelastic and the two vehicles stick together after the collision, what is their final velocity? how can we solve this equation?
we can use the principle of conservation of momentum
What is the name of the process by which a star produces energy?
The process by which a star produces energy is called nuclear fusion
This type of energy is produced by the heat of the earth's core and is used for geothermal power generation
geothermal energy
What is refraction?
The bending of light because it passes through something
This type of electromagnetic radiation has the highest frequency and energy, and is used in medicine for diagnostic imaging and cancer treatment.
X-rays