Force: push and pull
Define force
push or pull causing movement or change in movement
define buoyancy
the force that keeps something floating
define balanced force
equal amounts of force on opposite sides
if there is more friction do you go faster or slower?
slower
What is erosion?
Water, wind, and other natural forces cause rocks and earth to wear away.
push or pull: closing a door
push
define magnetic force
like an invisible "glue" or "push" that magnets use to attract or repel certain objects
unequal amounts of force on opposite sides (like a see saw)
if there is less friction do you go faster or slower?
faster
What is the force that keeps clouds in the sky?
buoyancy
raking leaves
pull
define electrostatic force
What is a turbine?
a wheel-like machine that moves through wind or air
When two things rub together what does that cause?
friction
What is the force that can be found in a rock containing iron
magnetism
sawing wood
push and pull
Every magnet has a north pole and south pole at each of its ends
do LIKE poles of magnets ATTRACT or REPEL?
REPEL
Who studies forces that affect weather?
meteorologist
in the winter, is there a little or a lot of friction between the road and tires
only a little friction between the road and the tires because the road is smooth
Why is it good when a volcano erupts?
- magma is rich in minerals
- when the minerals turn to ash and lava and settle, they become the perfect soil for farming.
passing a basket ball
push
Every magnet has a north pole and south pole at each of its ends
do UNLIKE poles of magnets ATTRACT or REPEL?
ATTRACT
use wind energy from large white wind turbines to produce electricity
on dry road, is there little or a lot of friction between the road and the tires?
a lot of friction between the dry road and tires because the road is rough
Why do people live close to dormant volcanos?
perfect farming soil