Science Test Study - 4/29/2023 - 3rd Period

Volume of Liquid:

Liter (L)

Length of Something:

Meters (m)

Mass of something:

Grams (g)

kilogram

kg

decimeter

dm

dekagram

dag

milliliter

mL

kilometer

km

millimeter

mm

hectoliter

hl

milligram

mg

kilo-

k

hecto-

h

deka-

da (or/basically never D)

Base Units:

g, m, L

deci-

d

centi-

c

milli-

m

Metric Conversion Phrase:

King Henry Died By Drinking Chocolate Milk

Speed/Velocity Formula:

Distance divided by speed and time

Distance

the length of a path between 2 points

Displacement

the length of a straight line from the starting point to the ending point, along with a direction

Speed

the change in distance over a specific amount of time

Speed Units:

mph, m/s, km/h

straight horizontal line (on distance time graph)

no speed

the steeper the line, the ____ the speed (distance time graph):

greater

constant speed (distance time graph)

straight diagonal line

Insantaneous Speed

the rate at which an object is moving at a given moment in time

acceleration

change in speed or velocity over a specific amount of time (speeding up, slowing down - negative acceleration, change in direction)

acceleration formula

a = final-initial speed over time

ta

speeding up

t-a

slowing down

acceleration units

mph squared; m/s squared

positive acceleration

positive acceleration

constant speed

straight line

Distance vs. Displacement

Distance is the length of the path taken by an object whereas displacement is the simply the distance between where the object started and where it ended up.

speed/time

acceleration