Science Vocabulary Words

Science Vocabulary Words
Vocab list #1
1. Conclusion-Explanation based on data in
an experiment
2. Density-How tightly packed together a
substance is. (crowded space)
3. Mass-Amount of matter in a substance
4. Matter-Anything that takes up space
5. Volume-Amount of space a substance
6. Weight-Gravity plus mass
Vocab list #2
7. Beaker-Wide-mouthed container with spout.
Has measurements marked on side.
8. Hypothesis-educated prediction that can be
9. Cycle-A continuous process that has no
start or finish.
10. Dependent variable-The factor that
responds to the independent variable in an
experiment; plotted on the Y-axis.
11. Graduated cylinder-Narrow container
used to measure the volume of liquids.
12. Independent variable-The factor that is
manipulated in an experiment; plotted on the
13. Control group-Portion of experiment used
for comparison.
14. Carbon Footprint- A representation of the
effect you or the organization has on the
15. Emissions- chemicals or gas that result
from burning or combustion.
16. Greenhouse Effect- When heat is trapped
in the ozone layer because of too much CO2 in
the atmosphere.
Vocab #3 list
17. Inference-an explanation of data based on
18. Model-a representation that helps to
explain something
19. Observation-information gathered from
20. Prediction-a guess about what will
21. Procedure-step by step process used to
conduct an experiment
22. Qualitative-dealing with descriptions
23. Quantitative-dealing with numbers
24. Results-data collected during an
25. Structure-having to do with parts and
26. System-a group of parts that function
Vocabulary List #4
27. Test tube-Narrow container with a
rounded bottom used to hold liquids
28. Thermometer-Tool used to measure
amount of heat
29. Triple Beam Balance-Tool used to measure
mass in grams
30. Isobar- a line on a map connecting points
having the same air pressure at the same
31. Humidity- the amount of water vapor in
the air
32. Psychrometer- tool used to measure
relative humidity
33.Weather- The short term state of the
atmosphere, including temp., humidity,
precipitation, wind and visibility
34. Cloud-a collection of small h2o droplets or
ice crystals suspended in the air
35. Meterologist- person who studies
atmospheric and weather conditions
36. Air Mass- large body of air where temp.
and moisture content are similar throughout.
Science Vocab list #5
37. Precipitation-Any form of water that falls
to the Earths surface from the clouds.
38. Cumulus-puffy white clouds that tend to
have flat bottoms
39. Stratus-clouds that form in layers
40. Cirrus-thin, feathery white clouds found at
high altitudes
41. Front-The boundary between air masses
of different densities and usually different
42. Thunder-the sound caused by the rapid
43. Lightning-an electric discharge that takes
place between two oppositely charged surfaces
44. Hurricane-a severe storm that develops
over tropical oceans and whose strong winds
of 120km
45. Tornado-a destructive rotating column of
air that is very high wind speeds
46. Barometer-an instrument that measures
atmospheric pressure
Science Vocab List #6
47. Wind-the movement of air caused by
differences in air pressure.
48. Anemometer-an instrument used to
measure wind speed
49. Cold Front-cold air moves under warm
air which is less dense
50. Warm Front-warm air moves over cold
air which is less dense
51. Occluded Front-when a warm air mass
is caught between two colder air masses
52. Stationary Front-when a cold air mass
meets a warm air mass both air masses
do not have enough force to lift the warm
air mass over the cold
53. Wind vane-an instrument used to
measure the wind direction
54. Eye wall-group of cumulonimbus clouds
that produce heavy rains and strong
winds (around the eye)
55. Eye-center of a hurricane, relatively
calm w/low pressure
56. Rain Band-beyond the eye wall,
produces heavy rains and high wind
Vocabulary list #7.
1. Microscope- Device used to magnify objects
too difficult to see with the human eye using
multiple lenses at low, medium and high
2. Cell Wall- The ridged, porous outer layer of a
plant cell.
3. Chloroplast- an organelle that converts the
radiant energy of the sun into chemical
energy through the process of
4. Cytoplasm- a jelly-like substance,
compound mainly of water, occupying most
of the space between the cell membrane and
the nucleus
5. Endoplasmic reticulum- a network of
passageways in which chemical compounds
are manufactured, processed, and
6. Golgi apparatus, body, system- a stack of
membranes that collects, modifies, and
packages chemical compounds.
7. Lysosome- a small sac that contains
digestive chemicals
8. Mitochondria- organelles that, using oxygen,
converts nutrients into energy that can be
used by the cell.
9. Nucleolus- a small body in the nucleus
where ribosomes are synthesized.
10. Nucleus- a round body in the center of
the cell that contains DNA and directs the
cell’s activities.
Vocab. #8 List
1.Nuclear Membrane-layer that surrounds
the nucleus
2. Cell Membrane-membrane or plasma
that surrounds the cell
3. Ribosomes-tiny structure where proteins
are synthesized
4. Vacuoles-sac that stores water, nutrients,
and other chemicals. Larger in plant cells
than animal cells
5. Centrioles-found in animal cells only,
organizes movement in cell, moves
Vocab. #9 List
1. Homeostasis-the maintenance of
a constant internal state in a
changing environment
2. Tissue-a group of smaller cells
that perform a common function
3. Organ-a collection of tissues that
carry out a specialized function of
the body
4. Skeletal System-the organ
system whose primary function is
to support and protect the body
and to allow the body to move
5. Joint-a place where two or more
bones meet
6. Ligaments-strong elastic bands
of connective tissue
7. Tendons-connected tissue that
attaches muscle to bone
8. Muscle System-the organ system
whose primary function is
movement and flexibility
9. Skeletal muscle-enables bones to
10. Cardiac muscle-pumps blood
around the body
11. Smooth muscle-moves food
through the digestive system
Science Vocabulary list #10
1. Integumentary System. The organ system that forms a
protective covering on the outside of the body.
2. Epidermis. The surface layer of cells on a plant or
3. Dermis. The layer of skin below the epidermis.
4. Cardiovascular System. A collection of organs that
transport blood throughout the body.
5. Heart. Organ made of cardiac muscle that pumps blood
through the body.
6. Artery. A blood vessel that carries blood away from the
heart to the body’
7. Capillary. A tiny blood vessel that allows an exchange
between blood cells and tissue.
8. Vein. A vessel that carries blood to the heart.
9. Pulmonary Circulation. The flow of blood from the heart
to the lungs and back to the heart through the
pulmonary arteries,capillaries, and veins.
10. Systemic Circulation. The flow of blood from the heart
to all parts of the body and back to the heart.