February 24, 2014 Homework : Finish reading section 2 and complete cause and effect graphic organizer pg. 79 in NB, Due Wednesday. Do Now: Write down homework Update T.O.C : pg. 79: Cause & Effect: Sinking objects Open notebook to pg.79- Copy Down Graph. Org Open textbook to pg. 82
16
Embed
February 24, 2014 Homework: Finish reading section 2 and complete cause and effect graphic organizer pg. 79 in NB, Due Wednesday. Do Now: Write down homework.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
February 24, 2014Homework: Finish reading section 2 and
complete cause and effect graphic organizer pg. 79 in NB, Due Wednesday.
Do Now:Write down homework Update T.O.C: pg. 79: Cause & Effect:
Sinking objectsOpen notebook to pg.79- Copy Down Graph. OrgOpen textbook to pg. 82
BuoyancyBuoyancy: The ability to float ex: Ships and boats are designed to have buoyancy
Buoyant ForceBuoyant force : is the upward force exerted
(applied) on an object that is submerged in a fluid.
Water and other fluids exert (give off) this force: Not just in liquids (water) , but also in gases (Air-Hot air balloons)
Acts in the opposite direction of gravity so makes an object feel lighter
Buoyant ForceA fluid exerts pressure on all
surfaces of a submerged object.
Since pressure of a fluid increases with depth—
The upward pressure on the bottom of the object is GREATER then the downward pressure on the top
Results in the net force acting upward on the object: Fig. 7
What happens when the weight of the object is greater then the buoyant force?
It will Sink!
If they are equal? Weight =Buoyant ForceIt will not sinkRemember the weight on an
object is the downward force
Why does the lobster sink?Because the weight of the lobster is greater then
the buoyant force
February 25, 2014Homework: Finish reading section and
complete graphic organizer on pg. 79 in NB.-Finish class work question on pg. 81 (if not