Forces
A ____________ force or net force is a single force that can represent the combined effect of two or more forces in magnitude and direction.
Resultant
_______________ quantities are physical quantities that have magnitudes only.
Scalar
___________ is the product of the force and the displacement of an object in the direction of the force.
Work
The _________ is the thinnest layer of the Earth and is made up of rocks and minerals.
Crust
What is the region surround a magnet called?
the magnetic field
The _______________ force is the force acting on a submerged or partially submerged object in a fluid.
Buoyant
_____________ quantities are physical quantities that have magnitude and direction.
Vector
The SI unit of work is ____________
Joule
The __________ is the thickest layer of the earth and is made up of silicon, oxygen, magnesium, aluminum and iron.
Mantle
Which simple machine is used to lift up or lower a load?
Pulley
What is friction that acts on two surfaces in contact that are moving called?
Kinetic
____________ is the length of the actual path traveled by an object from one location to another.
Distance
What is the rate at which work is done?
Power
_________ were formed from the decay of animals and plants that lived millions of years ago.
Fossil fuels
Work is defined as the product of force and the _____________ of an object in the direction of the force.
displacement
What two things affect the pressure exerted by a liquid?
Density and depth
What is the length of the path traveled by an object in a specific direction called?
Displacement
What are devices that help us do work easier called?
Simple machines
_____________ energy sources are sources of energy that will not replenish themselves and may run out soon.
Non-renewable
_____________ energy is the combination of kinetic energy and potential energy.
Mechanical
The _______________ is the area around a magnet where there is a force pulling magnetic things to the magnet.
electric field
What is the rate of change of displacement called?
Velocity
The law of conservation of energy states that energy cannot be _________ or ___________.
Created or destroyed
We should __________ the use of fossil fuels as the burning of fossil fuels releases harmful gases and causes pollution
Reduce
What is energy called that is stored in an object because of its position or condition called?
Potential energy