Chapter #1 & Chapter #2 Flashcards
What is the definition of precise?
Measurements that are very similar to one another.
What is the definition of accurate?
Measurements that are similar to there true value.
What is the triangle for calculating the density, mass, volume of an object?
Mass on top (g)
Density on the left bottom (g/cm3)
volume on the right bottom (cm3)
What is the triangle for calculating the speed, distance, time.
distance on the top (cm, m, km)
speed on the bottom left
(cm/s, km/h, m/s)
time on bottom right (sec, hrs)
What is the definition of volume?
The space occupied by an object.
What is the definition of meniscus?
The curved upper surface of a liquid.
What is the definition of displacement? (physics)
Putting something into water (liquid) and the amount of water which moves out of the way.
What is the definition of weight?
the downward force of gravity that acts on an object (changes in space).
What is the definition of immerse.
To cover something in liquid (usually water) so that the object is submerged.
What is the definition of mass?
The quantity of matter (ex: moving a bowling ball forwards and backswords quickly) (does not change in space).
What is the definition of density?
The ratio of mass to volume for a substance (the concentration of mass).
how do you measure the volume of a cube?
v = l x w x h
volume = length x width x height
What is the symbol for density?
p
How can we measure the volume of irregular objects?
You can us displacement.
use a measuring cylinder and fill with water. place object in water and the change in the volume of the water is the volume of the object.
How can we measure the volume of irregular objects that float?
First measure the volume of an object that sinks using displacement.
Place the floating object in the measuring cylinder
place the sinking object on top of it so that they both sink.
Calculate the volume change and then subtract the volume of the sinking object from it
