Science Exam Words
Terms
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- Precipitation
- Rain, snow, sleet or hail that falls back to earth after it has gotten heavy
- Abiotic factors
- The nonliving parts of an ecosystem
- Experimental error
- A flaw in the design of a procedure
- Metals
- An element that is ductile, malleable, and conducts electricity well
- Control group
- The group with out treatment
- Smog
- Ground level ozone
- Atom
- The smallest particles of matter
- Product
- The chemical compounds on the left of an arrow pointing right
- Human error
- A human mistake made while following the procedure
- Organic compounds
- Compounds that can be used on earth
- Stratospheric ozone
- Good ozone that keeps out ultraviolet radiation
- Variable
- something that changes
- Cellular respiration
- The process of breaking down food to give energy
- Data table
- Data that is organized in a table
- Evaporation
- When water turns into a gas and rises into clouds
- Aquifer
- Where water is stored undreground
- Convection
- The transfer of heat in a gas or liquid by currents
- Mitochondria
- The place in the cell where cellular respiration takes place
- Habitat
- The physical environment where the organism lives
- Six months
- How old your current science report can be
- Conductors
- Substances that transfer heat energy easily
- Ozone hole
- A thin section in the ozone layer over Antarctica where UV rays can get through
- Hypothesis
- Making an educated prediction that solves a problem or answers a question
- Ions
- Atoms with a charge either positive of negative
- Groups
- Columns (I-VII) on the periodic table
- Consumer
- An organism that gets its energy by eating other animals
- Periodic table
- The table of elements
- Exosphere
- There the atmosphere turns into space; temperature decreases as you go up
- Coefficient
- The number in front of the chemical compound; does not have to be there
- Energy Pyramid
- A sequence in which energy is transfered from one organism to another
- Photosynthesis
- The process of changing sunlight to energy by absorbing sunlight which uses the sunlight along with water and carbon dioxide to create sugar
- Absolute zero
- The coldest temperature their can be it contains no brownian motion
- Metalloids
- An element that has some properties of metals and some of nonmetals; a hybrid
- Radiation
- The travel of heat in waves or rays
- Ductile
- Can be pulled into a wire
- Nucleus
- Where the protons and neutrons are found in an atom
- Subscript
- The number of atoms of one element
- Electrons
- A subatomic particle with a negative charge
- Troposphere
- The layer of the atmosphere that contains life and weather; the temperature decreases as you go up
- Matter
- What everything is made out of
- Chlorofluorocarbons
- Man-made chemical substance that depletes the ozone layer
- Conduction
- The transfer of heat between the particles of matter (typically a solid)
- Independent variable
- The variable that is controlled during an experiment
- Reactant
- The chemical compounds on the right of an arrow pointing right
- Ecosystem
- All the different biotic and abiotic factors in a certain area
- Brownian motion
- The measure of how much molecules move
- Physical change
- The state of matter changes but the chemical structure does not
- Heat
- The total energy of the random movement of molecules of a substance/object
- Particulate matter
- Pieces of "stuff" in the atmosphere
- Brittle
- Breakable, shatters
- Nitrogen cycle
- The continuous cycle of the transfer of carbon through the atmosphere
- Trophic level
- Each step in the transfer of energy in an ecosystem
- Temperature
- The measure of heat
- Periods
- Rows (1-7) on the periodic table
- Compound
- Two or more atoms that are combined
- Insulators
- Substances that do not easily transfer heat energy
- Carbon cycle
- The continuous cycle of the transfer of carbon through the atmosphere
- Thermosphere
- The layer of the atmosphere that contains single atoms, space shuttles that orbit; temperature increases as you go up
- Stratosphere
- The layer of the atmosphere that contains the ozone layer; temperature increases as you go up
- 3rd law of thermodynamics
- Absolute zero
- Celsius/fahrenheit/kelvin
- Different ways of measuring temperature
- Atmosphere
- The layer of air and gasses that surround the earth
- Montreal protocol
- An agreement that says countries will not produce CFC's
- Malleable
- Can be flattened
- Tropospheric ozone
- Ozone that s hazardous to human heath and vegetation; 10% of ozone
- Cloud seeding
- Man-made precipitation that occurs when humans fill clouds with iodine particles
- Experimental group
- A group with treatment; testing to independent variable or hypothesis
- Ozone event
- When tropospheric ozone makes it unhealthy
- Herbivore
- an organism that eats only plants
- Conclusion
- The section of a lab report where you determine if your hypothesis is supported
- Greenhouse gasses
- Gasses that contribute to the greenhouse effect; absorb and radiate heat
- 1st law of thermodynamics
- Energy is conserved
- Tropopause
- Between the troposphere and the stratosphere
- Carnivore
- An organism that eats only meat
- Why hot air rises
- Because it is less dense then cold air
- Producer
- An organism that makes its own food
- Inorganic compounds
- Compounds that cannot be used on earth
- Ozone layer
- 90% of ozone that is found in the stratosphere
- Nonmetals
- An element that is brittle and does not conduct electricity well
- Biotic factors
- The living parts of an ecosystem
- Law of conservation of matter
- Matter is neither created nor destroyed
- Chemical change
- the chemical structure changes from the reaction to the product
- Mesopause
- The transition between the mesosphere and the thermosphere
- Environmental issues
- Issues in the environment
- Water cycle
- the continuous cycle of the transfer of water through an ecosystem, which involves evaporation, transpiration, condensation, and precipitation
- Mesosphere
- The layer of the atmosphere that contains shooting stars and meteors; the temperature decreases as you go up
- Chloroplast
- The place in the cell where photosynthesis takes place
- 10% rule
- 10% of the energy is transfered from one level to the next
- Ultraviolet radiation
- Harmful radiation that is absorbed/deflected by the ozone layer
- Element
- A material consisting of only one type of atom
- Dependent variable
- The variable that changes in response to the independent variable
- Omnivore
- An organism that eats both plants and meat
- Stratopause
- Between the stratosphere and the mesosphere
- Neutrons
- A subatomic particle with a neutral charge
- Atomic mass
- The number of protons in a atom
- Niche
- An animals way of life
- The atomic number
- The number of protons in a atom
- Protons
- A subatomic particle with a positive charge
- Transpiration
- The evaporation from plants
- States of matter
- Solid, liquid, gas, plasma