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TruittScience5
5th grade science vocab review
| Term | Definition |
|---|---|
| classification key | important tool used to help identify objects and organisms |
| hypothesis | educated guess/prediction about what will happen based on what you already know |
| hypothesis | expressed in a if...then statement |
| independent variable | variable that is changed by the experimenter |
| dependent variable | variable that is measured by the experimenter |
| constant | things that stay the same in an experiment |
| inference | conclusion made from background knowledge and available data |
| observation | statement made from using your senses |
| sound | form of energy produced and transmitted by vibrating matter |
| frequency | number of wavelengths per second |
| wavelength | distance between two compressions |
| pitch | determined by the frequency of a vibrating object |
| high frequency | high pitch |
| low frequency | low pitch |
| amplitude | amount of energy in a sound wave; related to volume |
| crest | top of a wave |
| trough | bottom of a wave |
| light | waves of energy |
| visible spectrum | colors we see with our eyes; rainbow; ROY G BV |
| reflection | when light bounces back |
| refraction | when light is bent |
| absorption | when light is taken in |
| matter | anything that has mass and takes up space (volume) |
| mass | amount of matter (stuff) in an object |
| gas | no definite shape or volume; compressible; flows easily |
| liquid | definite volume; assumes the shape of its container; not easily compressible; flows easily |
| solid | definite shape AND volume; not easily compressible; does not flow easily |
| mixture | combination of 2 or more substances that can easily be separated |
| solution | special type of mixture in which one substance dissolves in another |
| element | examples are hydrogen, oxygen, helium, carbon, potassium, sodium |
| compound | when 2 or more elements combine to form a new substance; examples are water and table salt |
| atom | smallest part of an element |
| molecule | smallest part of a compound |
| cells | carry out life processes |
| plant cell structures | cell wall, chloroplasts, cell membrane, cytoplasm, vacuole, nucleus |
| animal cell structures | cell membrane, cytoplasm, vacuole, nucleus |
| plant cell | rigid/stiff, boxy shape |
| animal cell | flexible, round shape |
| cell wall | keeps plant cell rigid and stiff |
| chloroplasts | makes food for plant cell |
| cell membrane | allows things to go in and out of cell |
| nucleus | controls all activities of the cell |
| cytoplasm | jelly-like substance that holds everything in place |
| vacuoule | stores food and water; plant cells have one large one; animal cells have several small ones |
| vascular plant | special tissues to transport food and water; root system; grow tall |
| vascular plant examples | trees, flower, grass, bushes, fern |
| nonvascular plant | does not have special tissues to transport nutrients; grow in damp, shady areas, spores, short |
| nonvascular examples | moss, lichen, liverwort , hornwort |
| vertebrates | animals with backbones; fish, amphibians, reptiles, bird, mammals |
| invertebrates | animals without backbones; insects, worms, crabs, spiders |
| 3 ocean movements | waves, tides, currents |
| ocean current | caused by wind patterns, temperature, and salinity |
| waves | caused by wind |
| tides | caused by the gravitational pull of the moon |
| salinity | amount of salt in the water |
| bioluminescent | animals that produce their own light |
| sedimentary rocks | layers of sediment cemented together |
| igneous rocks | melted and cooled |
| metamorphic rocks | changed by heat and pressure |
| crust | outermost layer of the Earth; thin; layer we walk on; made of rock |
| mantle | thickest layer of the Earth; made of rock |
| outer core | made of liquid iron and nickel (metals) |
| inner core | made of solid iron and nickel (metals) |
| convergent boundaries | when tectonic plates come together; volcanoes |
| divergent boundaries | when tectonic plates move apart; mid ocean ridges |
| transform boundaries | when tectonic plates slide past each other; earthquake |
| faults | boundaries of tectonic plates |
| weathering | breaking down of sediments |
| erosion | moving of sediments by water and/or wind |
| deposition | dropping of sediment in a new location |
Created by:
mrswarren_17
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