-
what animal feeds on refuse and dead organic matter?
Scavenger
-
what animal feeds on other animals?
carnivore
-
an organism such as a fungus that obtains nutrients from decaying plants and animals and hastens their decompositon
decomposer
-
the kind of energy that an object has because of its position or condition
potential energy
-
the energy obtained from heat in the interior of the earth
Geothermal energy
-
the resistance to motion of two moving objects or surfaces that touch
friction
-
on a celsius thermometer the number of degrees between the freezing point of the boiling point of water is
100
-
a vector is used to represent force. the arrow of the vector indicates its
direction
-
the process that most directly results in cloud formation is
condensation
-
the smallest particle that still retains the characteristics of copper is
an atom
-
when salt is added to water the freezing point of tghe water is ?
lowered
-
fungi that live off of dead or decaying organic matter are classified as
saprophytes
-
ordinary table salt is an example of a
compound
-
the planet closest to the sun is
mercury
-
the color of a star indicates its
temperature
-
the function of white blood cells is to
destroy harmful microorganisms
-
the earth spins around on its
axis
-
the distance between successive identical parts of a wave is called the wave's
wavelength
-
protein is a compound made up of
amino acids
-
6 types of simple machine, what are they
- pulley
- lever
- wheel and axel
- inclined plane
- screw
- wedge
-
the process of photosynthesis requires the presence of
chlorophyll (the green pigment in plants) and sunlight
-
two methods of asexual reproduction are
binary fission (by dividing a cell) and budding (pinching of an organism that develops into another)
-
burning you finger by touching a hot pot is an example of heat transfer by
conduction
-
the bending of light waves when they pass from air into water is an example pf
refraction
-
during the process of transpiration, moisture leaves a green plant through the surface of a
leaf
-
a lack of Vitamin D is related to a condition called
rickets
-
vitamin D is also known as
sunshine vitamin
-
a problem caused by a lack of Vitamin C
Scurvy
-
a disease caused by lack of iodine
goiter
-
a disease caused by lack of vitamin B
beriberi
-
substances that hasten chemical reaction time without themselves undergoing change are called
catalysts
-
circulatory system
is concerned with the circulation of the blood and the lymph
-
eustachian tube, the cochlea, the tiny bones called the anvil and stirrup and the semicircular canals are all parts of what part of the human body?
ear
-
-273 C is equal to what on the Kelvin temperature scale?
absolute 0
-
212 F does what to water
boiling temperature
-
not the arrow but the length of the line segment represent what of the vector?
the magnitude
-
what refers to the rate of which an object changes directions?
velocity
-
moisture in the atmosphere that condenses until it is heavy enough to fall as rain or snow
precipitation
-
the process by which plants give off water vapor through the surfaces of their leaves
transpiration
-
the method by which heat or light energy is emitted in the form of waves or particles
raditation
-
what is the smallest particle of an element that still acts like that element
an Atom
-
what is composed of one or more atoms? that the atoms may all be of the same element or can be from different elements forming a compound?
molecule
-
what is the smallest part of a particular substance that still acts like the substance
molecule
-
What is a particle in the interior of an atom.? it is located in the nucleus of the atom and carries a positive electric charge
proton
-
what is a particle in the interior of an atom? it orbits the nucleus and carries a negative electric charge
electron
-
-
a type of mixture when one substance is dissolved in another substance. (chloride +water= bleach)
solution
-
the mixture of of metals or a metal and a nonmetal.
alloy
-
mercury, venus, earth, mars, jupiter, Saturn, Uranus, Neptune, pluto
planets from the sun
-
red blood cells do what?
they carry oxygen to the body cells and also carry carbon dioxide away from body cells
-
amplitude of a wave is what?
the height of the crest that the wave reaches above or below the mean position.
-
the frequency of a wave is what?
the number of wave crest that move past a certain location in a certain time period
-
proteins do what?
they serve as building or rebuilding units
-
what do carbohydrates do?
they produce energy
-
lipids are?
fats in the body
-
simple machines are?
lever, the wheel and axel, the pulley and the incline plane
-
a battery produces electric current by?
chemical means
-
chromosomes and DNA are required for?
reproduction
-
Glucose
is a product of photosynthesis , not something needed for it to occur
-
mitochondria are required for the process of?
Respiration
-
mitosis
is a normal process of cell division. chromosomes in the nucleus are duplicated the split each have the same amount of chromosomes as the parent/
-
meiosis
the chromosomes pairs split apart, and each dauther cell has only half as many chromosomes as the parent cell
-
convection is when
heat is transfered within liquids or gases when those liquids or gases are heated unevenly.
-
insulation is
the preventing of heat or light from one conductor to another by separting the two with some conducting substance
-
magnitude is a measurement of what?
sound and light
-
stomata is found on what part of a branch
leaf
-
biodiversity is ?
it describes the presense
-
Genetic Mapping
is a technique used to study the gene sequence in the DNA of humans and other species.
-
Center of Gravity is ?
the point within an object where there is an equal amount of mass in all directions
-
as the pressure of a fixed mass of gas increased at constant temperature , the density of that gas?
increases
-
a _____ changes the voltage in power lines
Transformer
-
a motor transform electrical or chemical or heat energy into what type of energy?
mechanical
-
the human heart consist of how many chambers?
4 right and left atria and right and left venticles
-
water and carbon dioxide make?
sugar in the photosynthesis process.
-
the three layers of the earth are?
crust, mantle, core
-
a huge piece of earths curst that floats on top of the mantle are known as
PLATES
-
a crustal plate sliding beneath another which are usually earthquake and volcanoes zones are known as?
subduction zone
-
a term used to describe the part of Earth where life can exist, also a term for all living things and their environment
biosphere
-
different types of matter that are located near each other but are not chemically bound to each other is known as
mixture
-
a change in state from liquid to a solid is called?
freezing
-
what is an epicenter
the point on earths surface directly above the focus of the quake
-
a high pressure center is generally characterized by weather that is
cool and dry
-
the main source of dissolved salts in the ocean is ?
minerals carried from the land by rivers ( minerals from rocks eroded by the rains)
-
Scientific Method has 5 steps which are?
- 1. observation
- 2. hypothesis
- 3. experiment
- 4. theory
- 5. law or principle
-
the parts of cells are known as
organelles (little organs)
-
What holds the cell together and controls the selective passage of certain materials into and our of the cell
cell membrane
-
the living material of the cell lying within the cell membrane but outside the cucleus
cytoplasm
-
the control center of the cell which carry genetic or hereditary material of the cell
nucleus
-
endocrine system
includes glands that regulate growth, blood pressure, etc.
-
lymphatic system
brings oxygen to cells and remove waste products from them
-
excretory system
removes wastes from the body(excremento)
-
light passes through the pupil then the cornea and lens(which turns the image upside down) then the retina which flows into the optic nerve to the brain(where it is flipped again and recognized
the eyeball
-
geology is the study of
the formation and composition of the earth. ( useful for the design and construction of large scale buildings and bridges.
-
1. arctic tundra
2. taiga
3. deciduous forests
- 1. treeless plains, vast trenches
- 2. coniferous(evergreen) forests (canada)
- 3. regions with relatively temperate climates(mild)
-
Meteorology is the study of
weather and climate
-
Matter is defined as anything that occupies
space and has mass
-
Mass
is the is the quantity of matter it possess and at times has a unit of weight assigned to it.
-
newtons first law
if the net force acting on an object is zero, the velocity of the object does not change
-
newtons second law
if the net force acting on an object is NOT zero the object will be accelerated in the direction of the force
-
newtons third law
when one object exerts a force on a second object the second object exerts an equal and opposite force on the first object ( ACTION EQUALS REACTION)
-
centripetal force
the force which keeps an object moving around a circle in a circular path
-
6 simple machines are
pulley, lever, wheel and axle, inclined plane, screw and wedge
-
3 types of heat transfer
conduction, convection and radiation
-
Silver is the best metal _________.
conductor
-
Direct Current (DC) is?
the flow of current in one direction at a constant rate
-
Alternating Current(AC) is
current that goes through a cycle (zero to max speed in one direction then slows down then zero to max speed in the opposite direction)
-
the electrode that is positively charge is called an
anode
-
electrode that is negatively charged is called
cathode
-
Mitochondrion is the
power house of a cell involved in cellular respiration
-
Ribosome is
a site of protein synthesis within the cell they are in the cytoplasm
-
golgi body golgi apparatus do what?
store and transports materials formed in other parts of the cell
-
lysosome is a sacklike structure that ?
releases the enzymes within the cell
-
the atomic number is based on how many ________are in the nucleus
protons
-
the atomic mass is based the number of ________ and ________in the nucleus
protons and neutrons
-
there are 3 states of matter what are they?
gas, liquid, solid and the fourth state is plasma (very hot ionized gases)
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