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WorksheetsNat Reviewer
Total questions: 133
Worksheet time: 2hrs 54mins
Is mass and weight is the same?
Yes
No
Which force pulls objects towards the Earth
Friction
Fore
Air resistance
Gravity
what are the major organs of the circulatory system
vein, arteries, capillaries, heart
Nose and Mouth, Lungs, Diaphragm, Alveoli
Muscles, Bones, Ligament, Tendon
Brain, Spinal Cord, Nerves, Neuron
what are the major organs of the respiratory system
vein, arteries, capillaries, heart
Nose and Mouth, Lungs, Diaphragm, Alveoli
Muscles, Bones, Ligament, Tendon
Brain, Spinal Cord, Nerves, Neuron
what are the major organs of the muscular skeletal system
vein, arteries, capillaries, heart
Nose and Mouth, Lungs, Diaphragm, Alveoli
Muscles, Bones, Ligament, Tendon
Brain, Spinal Cord, Nerves, Neuron
what are the major organs of the digestive system
vein, arteries, capillaries, heart
Skin, Lungs, Kidneys, Bladder
Esophagus, Stomach, Small Intestine, Large Intestine
Brain, Spinal Cord, Nerves, Neuron
Match the following with there function
Digestive system
Break down food into substances that the body uses for energy
Excretory system
Removing wastes produced by daily actives to do other daily life activities
Muscular skeletal system
support body give shape protect organs area for muscles to move store minerals and make blood cells
Nervous system
Control and coordinate the body’s activities. helps to sense change in environment
Circulatory system
Transport needed substances throughout the body and carry away the wastes
Match the following with there function
Digestive system
Break down food into substances that the body uses for energy
respiratory system
take in oxegen and remove carbon dioxide from body to preform daily life activities .
Muscular skeletal system
support body give shape protect organs area for muscles to move store minerals and make blood cells
Nervous system
Control and coordinate the body’s activities. helps to sense change in environment
Circulatory system
Transport needed substances throughout the body and carry away the wastes
What is this science tool?
jar
beaker
thermometer
ruler
What does this science tool do?
used for heating a liquid
used for measuring volume of a liquid
used for measuring mass
used for measuring volume of a sound
Name this tool.
Thermometer
Triple Beam Balance
Pan Balance
Safety Goggles
A water molecule has the chemical formula H2O. This means that the water molecule is made up of
Two hydrogen atoms and one oxygen atom
Two oxygen atoms and one hydrogen atom
Two hydrogen atoms and two oxygen atoms
Two molecules of water
Which of these can rapidly affect Earth’s surface?
earthquakes
annual rainfall
sediment deposits
frozen precipitation
How does a volcano cause a constructive change to the Earth's surface?
It floods the land.
It adds new land.
It takes land away.
It breaks apart land.
What is pictured in the diagram?
canyon
fault
tornado
volcano
What is a sign that a chemical change has occurred?
The physical properties are the same
The state of the matter has changed
The production of heat, light, or smoke is observed
The substance seems to have disappeared
Water vapor in the air gets cold and changes back into liquid, forming cloud
Precipitation
Evaporation
Condensation
Sublimation
Water moves or flows over the land surface.
Infiltration
Condensation
Surface Runoff
Sublimation
Transformation of water from liquid to gas.
Precipitation
Evaporation
Condensation
Sublimation
It is the process of burning, When it occurs, CO2 is released into the atmosphere
Photosythesis
Respiration
Decomposition
Combustion
It is the process wherein animals or humans take a sugar and oxygen then they release carbon dioxide, water and energy
Photosynthesis
Respiration
Decomposition
Sublimation
It is the process wherein nitrogen is converted to ammonia
Assimilation
Ammonification
Nitrogen Fixation
Denitrification
What do you call the bacteria that helps to convert ammonia into nitrate
Nitrifying bacteria
Denitriying bacteria
Nitrogen Fixing bacteria
Nitrogenase
It is produced when dimethyl sulfide reacts with oxygen.
Sulfur dioxide
Hydrogen sulfide
Sulfuric acid
Ammonium sulfate
It is produced when sulfur dioxide reacts with oxygen
dimethyl sulfide
hydrogen sulfide
sulfur sulfide
ammonium sulfate
These bacteria incorporate sulfur into sulfate salts which can be taken up by plants
Aerobic bacteria
Anaerobic bacteria
both A & B
None of the above
Tectonic plates are huge moving pieces of the Earth's crust and there are different mechanisms that can explain the causes of their movement. Which of the following are the causes of plate movement?
a. radiation and conduction
b. Convection currents and gravity
c. Mantle convection and diffusion
d. Gravity and sublimation
There are three types of plate boundaries. Each type is associated with different geological features. How are mountain ranges formed by plate tectonics?
a. It is formed when two tectonic plates move away from each other.
b. Mountain ranges are formed when two continental plates converge, neither of the buoyant plates are able to give way and subduct beneath the other.
c. Mountain ranges are formed when one of the plates (oceanic crust and lithospheric mantle) is pushed, or subducted, under the other and often it is the older and colder plate that is denser and subducts beneath the younger and warmer plate.
d. It is formed when two tectonic plates slide past one another.
The seven major plates are Pacific, North American, Eurasian, African, Antarctic, Indo- Australia, and South American plate. Which of the following statements is true about Pacific plate?
a. This plate extends all the way over the North Pole and even
contains Siberia and the northern island of Japan.
b. This plate is sandwiched between the North American and African Plates on the north and west sides.
c. This plate is the largest
and it stretches all the way along the west coast of North America to the east
coast of Japan and Indonesia.
d. This plate is surrounded by parts of the African, Australian, Pacific, and South American plates.
Scientists did not accept Wegener’s theory of continental drift. Why was Wegener's theory rejected by geophysicists of the 1920's?
a. He could not explain how or why the continents were drifting
b. He could not provide evidence for the continental drift
c. The presence of a continent directly over the south pole
d. The earth was then thought to be too young for such movements
The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. Which of the following statements is true about the Pacific Ring of Fire?
a. The Ring of Fire is home to 97% of the world's volcanoes and 99% of its earthquakes.
b. The Ring of Fire is home to the deepest ocean trench, called the Puerto Rico Trench and it is located east of Guam, the 4-mile-deep Puerto Rico Trench formed when one tectonic place was pushed under another.
c. The Ring of Fire is a roughly 90,000-mile chain of volcanoes and seismically active sites that outline the Pacific Ocean.
d. The Ring of Fire is the result of plate tectonics and it is a string of underwater volcanoes and earthquake sites around the edges of the Pacific Ocean.
Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements. Plate plates are able to move because Earth's lithosphere has greater mechanical strength than the underlying asthenosphere. Which of these is NOT the result of plate tectonics?
a. earthquake distribution
b. polar wander
c. formation of new oceans
d. convection in the outer core
How did Wegener’s hypothesis of continental drift differ from the current theory of plate tectonics?
a. Wegener’s hypothesis was supported with evidence from fossils and rock formations.
b. According to Wegener’s hypothesis, South America and Africa were father apart in the past.
c. According to Wegener’s hypothesis, the driving force for plate tectonics was mantle convection.
d. Wegener’s hypothesis was based on the assumption that the continents were much younger than the ocean basins.
A student finds a map of the tectonic plates in a reputable geology resource. The map is completely different from the map on the NOAA website. Some plates are of different shapes and sizes, some are in different locations, and some do not even exist at all. What is the most reasonable explanation for this?
a. The map represents the plates as they existed 200 million years ago.
b. The approximate depth inside the Earth where the hotspot magma originates.
c. There is a random distribution of rocks of various ages on the islands.
d. Sediments from continents are carried to the ocean in rivers and spread out on the ocean floor.
Scientists collect a set of core samples from the ocean floor and plot the age of the basalt on a map. They notice that the age of the basalts increases steadily from east to west until a certain point and then starts to decrease again. The scientists then collect samples along series of parallel tracks and notice the same pattern along each track. Which topographic feature most likely lies along the ocean floor where the rocks begin to decrease in age?
a. A deep submarine trench
b. Underwater landforms
c. Abyssal plains
d. Continental shelf
The theory of sea floor spreading was developed by an American geophysicist in 1962. What technique was used to do this?
a. Seismic survey
b. Magnetic survey
c. Echo sounding survey
d. Gravity survey
Continental drift was a theory that explained how continents shift position on Earth’s surface and Wegener together with his supporters collected a great deal of evidence for the continental drift hypothesis. Which of the following evidences is used to support the continental drift hypothesis?
a. the distribution of ancient fossils, rocks and mountain ranges
b. seafloor spreading
c. subduction
d. formation of island arc and trenches
Volcanic island arcs are associated with __________ .
a. transform plate boundaries
b. divergent plate boundaries
c. ocean-ocean convergent plate boundaries
d. ocean-continent convergent plate boundaries
1. Scientist found that the continents were moving apart from each other due to magma rising out of mid-ocean ridges and they called this:
a. Rift valley
b. Seafloor spreading
c. Submarine volcanoes
d. Ocean trenches
What geologic feature will occur along divergent plate boundaries where new ocean floor is created as the Earth tectonic plates spread apart?
a. fault
b.mid-ocean ridges
c. island arc
d. mountain ranges
What leads to the creation of island arcs?
a. Collision of two oceanic plates
b. Collision of two continental plates
c. Collision of a continental and an oceanic plate
d. All of the above
Scientists believe that differences in ____ cause hot, plastic like rock in the asthenosphere to rise toward Earth's surface.
a. weight
b. magnetism
c. density
d. composition
Which scientist is credited with proposing the ideas that led to the development of the plate
tectonics theory?
a. Charles Darwin
b. Albert Einstein
c. Isaac Newton
d. Alfred Wegener
Which of these statements is correct?
a. Continental crust is thicker than oceanic crust
b. Continental crust is thinner than oceanic crust
c. Oceanic crust is thicker than continental crust
d. Continental and oceanic crusts have the same thickness
When looking at mid -ocean ridges, the oldest rocks are __________.
a. Found close to the rift zone
b. Found close to the rift valley
c. In the middle
d. Found far from the mid-ocean ridges
How is oceanic crust forced back into the earth's mantle?
a. It wants to float but is forced to curl as it cools.
b. It wants to float but is forced under by colliding plates.
c. It wants to sink because it is made of high-density minerals.
d. It wants to sink because it is cold and therefore dense.
The unit of Force is
Kilogram metre per second square
Kilogram metre per second
Kilogram metre
Metre per second
Which theory is Albert Einstein's
Theory of relativity
First law of motion
Universal Law of gravitation
Second law of motion
Velocity is a vector quantity
True
False
We can hear sound in space
True
False
Speed is velocity with direction
True
False
Light year is a unit to measure
Time
Distance
Mass
Gravity
Acceleration is rate of change of
Velocity
Distance
Time
Displacement
Mass is a universal constant
True
False
What type of wave is light wave
Electromagnetic
Plastic
Molecular
Not predictable
Pressure is
Thrust upon Area
Force times displacement
Area times height
Volume times density
How is the periodic table of elements arranged?
(a)
The atomic number gives us
protons
electrons
mass
neutrons
nucleus
proton
lives in the nucleus & positively charge
electron
lives in the cloud & negatively charge
neutron
lives in the nucleus & no charge
valence electron
lives in the last ring & negatively charge
nucleus
where protons & neutrons are found and largest mass
Label the correct subatomic particles
Label the metals, nonmetals and metalloids
metalloids
characteristics of both metals and nonmetals
metals
generally shiny, malleable, ductile, and good conductors of heat and electricity
nonmetals
generally dull, brittle, and poor conductors of heat and electricity
groups/family
vertical columns on the Periodic Table that contain elements with similar properties
period
the horizontal rows of elements on the Periodic Table
Describe TWO things that the groups/families lets us know about the elements.
How many periods does the periodic table have AND what do each period tell us about the elements?
Valence electrons live in the (a) ring of the atomic structure. It tells us how (b) the elements are. Group 1 are the (c) whereas group 18 are the (d)
Identify which are the products and reactants
The Law of Conservation of Mass states that
compounds and elements are the same
elements can be destroyed
matter cannot be created or destroyed, but can be transformed
mass is the same for all the objects if they need to exist
This change is a
chemical reaction
physical change
musical change
Ice Ice baby
How is a chemical change different from a physical change?
there is no difference
a physical change creates a new substance
a chemical change creates a new substance
Is glass breaking a chemical or physical change?
A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?
Physical change
Chemical change
No change
The trends on the periodic table are dependent on..
how attracted a valence electron is to the nucleus
how attracted valence electrons are to each other
how attracted a valence electrons is to a non valence electron
how attracted a non valence electron is to the nucleus
The trends on the periodic table are dependent on..
how attracted a valence electron is to the nucleus
how attracted valence electrons are to each other
how attracted a valence electrons is to a non valence electron
how attracted a non valence electron is to the nucleus
What makes a valence electron more attracted to the nucleus?
less distance between the nucleus and having less protons
less distance between the nucleus and having more protons
more distance between the nucleus and having less protons
more distance between the nucleus and having more protons
less distance and having more valence electrons
What is the tendency of an atom to attract electrons towards itself in a bond?
atomic radius
ionization energy
shielding
Electronegativity
The higher the ionization energy...
the more attracted the valence electron is to the nucleus so it is harder to remove
the less attracted the valence electron is to the nucleus so it is easier to remove
the more attracted the valence electron is to another electron, so it is harder to remove
the more repelled a valence electron is to another electron, so it is easier to remove
Why does ionization energy decrease going down a group?
Adding more energy levels makes the ve- further from the nucleus so it is easier to remove
There are more valence electrons in the outer shell so the ve- is easier to remove
There are more protons in the nucleus so the ve- is easier to remove
There are less protons in the nucleus so the ve- is easier to remove
P, Cs, Co, Sr
P, Cs, Co, Sr
Why doesn't having more protons increase the attraction down a column?
there are more valence electrons in the outermost energy level
actually, there aren't more protons in the nucleus down the column
as energy levels are added, non-valence electrons block the extra protons from attracting ve-
more neutrons block the extra protons
What happens to atomic radius across a period?
the atoms get bigger because the nucleus is bigger as more protons are added
the atoms get bigger because there are more ve-
the atoms get smaller because with more attraction to the extra protons, the e- cloud moves closer to the nucleus
the atoms get bigger because there are more energy levels
Element Z has more protons than element Y, but both have 4 energy levels. Which statement is true?
Y is smaller and would attract electrons more in a bond
Y is bigger and would attract electrons more in a bond
Z is smaller and would attract electrons more in a bond
Z is bigger and would attract electrons more in a bond
Nitrogen is a _ so it will _ electrons when forming an ion.
metal, lose
metal, gain
nonmetal, lose
nonmetal, gain
Nitrogen will gain _ ve- to have a charge of _.
5 , -5
3, +3
3, -3
5, +5
A full valence shell is considered having _ ve-.
0
2
6
8
Which of the following lose all their ve- when forming an ion?
metals
nonmetals
metalloids
depends on how many ve- the element has
Which has a higher electronegativity.. Rb or Sr?
Rb, because with more p+ in its nucleus it attracts e- more
Sr, because with more p+ in its nucleus it attracts e- more
Rb, because with more nrg levels the ve- are closer to/ more attracted to the nucleus
Sr, because with more nrg levels the ve- are closer to/ more attracted to the nucleus
Which has a higher ionization energy.. N or As?
N, because with more p+ in its nucleus it attracts e- more making them harder to remove.
As, because with more p+ in its nucleus it attracts e- more making them harder to remove.
As, because with less nrg levels the ve- are closer to/ more attracted to the nucleus making them harder to remove.
N, because with less nrg levels the ve- are closer to/ more attracted to the nucleus making them harder to remove.
Look at the bohr models of Li and Be. Imagine the first valence electron was already removed from both atoms, and now you are going to remove the second valence electron. The energy required to remove the second valence electron is called second ionization energy. Would lithium or beryllium have a higher second ionization energy ?
Li, because it has more protons
Be, because it has more protons
Li, because the second valence electron comes from an energy level closer to the nucleus
Be, because the second valence electron comes from an energy level closer to the nucleus
Li, because the beryllium has two valence electrons that repel each other
When the molecules from the solvent pull apart the ions of the solute and surround them -
dissociation
solvation
adaptation
