Q1
an object is moving whether changing its position, speed, or direction.
Motion
What is Isaac Newton First Law (inertia)?
Things (object) stay still or keep moving the same way unless something pushes or pulls them.
What is the formula (equation) to find FORCE?
acceleration X mass = force
What is the unit for FORCE?
NEWTON
to use force to cause something to move closer.
pull
a force that resists the motion of two surfaces sliding across one another causing it to stop or slow down.
Friction
What is Isaac Newton second law?
The harder you push or pull, the more the object moves (heavier things need more force).
What is the formula (equation) to find SPEED?
distance traveled divide by time = Speed
What is the unit for MASS
GRAM?
the energy stored in an object that is not moving
Potential energy
forces are pushes or pulls that are NOT EQUAL, so they make an object MOVE.
Unbalanced force
what is Isaac Newton Third law?
Every action has an equal and opposite reaction (if you push something, it pushes back).
What is Wind energy/ turbine?
Wind turbines are used to convert wind energy to electricity.
what is the unit for TIME?
SECONDS/HOURS/MINUTES
the overall force acting on something
Net Force
a mixture that is unevenly mixed. (You can see the parts)
Heterogeneous mixture
What is DIRECTION?
a straight path that something could move along.
If MASS DIVIDE BY VOLUME = DENSITY./ D=M/V
A plastic cube has a mass of 25g and a volume of 5cm3. What is the density of the cube?
5g/cm3
energy that comes from moving water.
Hydropower energy
the smaller amount that is dissolved in a solution.
Solute
pushes or pulls that are EQUAL, so nothing moves.
Balanced force
What is GRAVITY?
a force that causes objects with mass to ATTRACT/PULL each other or the center of the earth.
mass × acceleration= force
A toy car has a mass of 75kg and speeds up at 6 m/s². What is the force?
450N
A dog pulls a sled with a mass of 5 kg. The sled speeds up at 4 m/s². Another dog joins and doubles the acceleration. What is the new force?
new force is 40 Newtons (N)
heat from under the Earth’s surface.
Geothermal energy