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Staar review 2 Flashcards | StudBud
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Staar review 2
Staar review 2
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Answers
1
A dog walks at a constant speed along a straight sidewalk, is example of
velocity
candy bar
speed
acceleration
2
How do you know that a chemical reaction has occured?
melting
gas production
evaporation
none
3
What two positions are the moon in during a spring tide?
New and 3rd
new and full
1st and 3rd
new and 1st
4
Look at picture. What kind of insect is it?
housefly
grasshopper
ladybug
dragonfly
5
The reactivity of an atom is determined by -
electrical charge of the atom
sum of the number of protons and neutrons
number of valence electrons
number of protons in the nucleus
6
What describes the theory of plate tectonics?
Plates formed as Earth cooled and the crust broke into piece
Continents slowly moved across surface changing shorelines
Lithosphere broken into pieces that slowly move
History can be interpreted by examining rock layers on globe
7
What is the role of oceans in forming hurricanes?
Warm ocean water provides energy, causes more evaporation
cold ocean water provides energy, causes more evaporation
cold ocean water provides energy, causes less evaporation
warm ocean water provides energy, causes less evaporation
8
Which is balanced and represents law of conservation of mass?
2H+2O-->2H2O
none
H2O-->H2+O2
2H2O-->2H2+O2
9
which kingdom would this organism be classifies under?
Animalia
Protista
Plante
Fungi
10
force of gravity between two objects in space is greatest when-
masses are small and objects are close together
masses are small and objects are far apart
masses are large and objects are close together
masses are large and objects are far apart
11
What body system is this diagram representing?
skeletal system
muscular system
digestive system
excretory system
12
In the topographic map, over time what will happen along the line indicated by arrow?
there is unlikely to be any change along time
water will erode a deeper stream
slip fault will increase in size
mountain ridge will be pushed up
13
girl swings on swing. When potential lowest and kinetic greatest?
when she pumps her legs halfway between highest and lowest
at highest point in her swing
when she jumps off swing from highest point she reaches
lowest point in her swing
14
Soccer player kicks ball and flies 1/2 down field. 2nd player kicks w greater force & scores?
law of inertia
none of the above
law of force and acceleration
Law of action-reaction
15
Which side will erode the fastest over time?
Northwest
Northeast
West
East
16
Which elements would have similar reactivity?
Ca, Sr, and Ba
B, C, and N
O, Cl, and Kr
K, Ca, and Sc
17
Which chemical equation illustrates law of conservation of mass?
CH3CH2OH+O2-->2CO2+3HO
CH3CH2OH+3O2-->2CO2+3H20
CH3CH2OH+3O2-->CO2+2H2O
CH3CH2OH+2O2-->3CO2+2H2O
18
Wegner's theory of continental drift was not accepted, why?
hot spots forming under continents
subduction zones at continental margins
magnetic reversals of north & south poles
convection currents in the mantle
19
What type of boundary found at North American Plate and Eurasian Plate come together?
transform
Divergent
Convergent
Fault Boundary
20
On the periodic table, elements with eight valence electrons are -
all found in period 8
most stable elements
most reactive elements
least stable elements
21
Table list elements & their number of valence. What is correct order, most reactive to least?
chlorine, carbon, neon
neon, chlorine, carbon
carbon, neon, chlorine
carbon, chlorine, neon
22
Which is not Law of Action-Reaction?
child's car seat
rocket launching
swimmer moving through water
soccer player kicking a soccer ball
23
At what point is potential energy the greatest?
2
4
3
1
24
Andes mountains located on Nazca Plate and South American Plate has what type of boundary?
transform
convergent
divergent
fault boundary
25
Jupiter 5th planet from sun. Has more moons. What property causes it to have more/less gravity?
greater the mass, the greater the gravitational pull
greater the mass, more objects that could orbit the planet
both a and b
none of the above
