Home
Subjects
Explanations
Create
Study sets, textbooks, questions
Log in
Sign up
Upgrade to remove ads
Only $2.99/month
Science chapter 1
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Terms in this set (36)
Acceleration
the rate at which velocity changes
Acceleration involves a change in either ______________ or ________________.
speed or direction
Anytime the speed of an object increases ,the object undergoes _______________________.
acceleration
true/false
Acceleration refers to increasing speed, decreasing speed, or changing direction.
True
Can an object be accelerating even if its speed is constant?
Yes
What are some examples of acceleration?
A car follows a gentle curve in the road,A batter swings a bat to hit a ball,A runner slows down after finishing a race.
What is the formula for acceleration?
Acceleration: final speed -Initial speed divided by time
To determine the acceleration of an object what must you calculate?
change in speed per unit of time
true/false
to calculate the acceleration of an automobile , you must subtract the final speed from the initial speed
false
the moon revolves around the earth at a fairly constant speed .is the moon accelerating?
yes ,it is changing direction
if an object is moving w/o changing direction ,then its acceleration is the change in its speed during one unit of time ...
,then its acceleration is the change in its speed during one unit of time
if an objects speed changes by the same amount during each each unit of time ...
then the acceleration of the object at anytime is the same
if an objects acceleration varies...
then you can describe only average acceleration
true/false
earths rocky outer shell is all one piece
false
the upper layer of earth consists of more than a dozen major pieces called ...
plates
theory of plate tectonics
the theory states that earths plates move slowly in various directions
what is true about earths plates?
some plates push toward each other, some plates glide past each other , some plates pull away from each other
true/false
the speed of earths plates is very slow
true
by knowing the average speed of a plate , what can scientists estimate about earths continents?
future changes
what is the formula used to predict how far a plate will move in a certain amount of time ?
distance: speed x time
true/false
the shapes and positions of earths continents will not change in the future
false
An object is in _______________ when its distance from another object is changing.
motion
What is a reference point?
a place or object used for comparison to determine if something if something is in motion
An object is in motion if it changes position relative to a[n] _______________________________.
referance point
what does SI stand for?
international system of units
SI
what is the basic unit of length?
meters
what does the prefix MILLI mean?
one thousanth
how many centimeters are there in a meter?
100
how many meters are there in a kilometer?
1000
what is used to calculate the speed of an object ?
distance divided by time
how do you find the average speed of a cyclist throughout an entire race ?
total distance divided by total time
istantaneous speed
the rate at which an object is moving in a given instant in time
what is speed in a given direction?
velocity
what do you need to determine velocity?
speed and direction
What is the slant of a line on a graph called?
the slope
true/false
the steepness of a distance versus time graphs slope depends on how quickly or slowly the object is moving.
true
Sets with similar terms
Science Chapter 1 test
35 terms
Science Chapter 1 Note cards
40 terms
Science - Chapter 1: Notes
67 terms
Science - Chapter 1: GRS Worksheets
37 terms
Other sets by this creator
Final Exam Essays
4 terms
History 2020 Exam 2 Essays
5 terms
AMH2020 Exam 2
30 terms
Chapter 8 Chemistry Test
19 terms
Other Quizlet sets
6.4 Test Review
17 terms
Physio Psych Book
249 terms
Chapter 6 Fund.
31 terms
First half of Unit 8 Quiz
46 terms