Glossary: Terms Starting with N
31 definitions in Science with links to the lessons that teach each word.
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natural
ScienceFrom Grade 1
found in nature
Learn it in: Common materials (Grade 1), Natural light sources (Grade 1), What is the environment (Grade 1)
natural change
ScienceFrom Grade 3
a change not caused by people
Learn it in: Environmental changes (Grade 3)
natural resource
ScienceFrom Grade 4
something from nature that people use
Learn it in: Natural resources (Grade 4), Natural resources (Grade 6)
natural selection
ScienceFrom Grade 6
survival and reproduction of the best-suited organisms
Learn it in: Adaptations (Grade 6)
nectar
ScienceFrom Grade 2
the sweet liquid in flowers that insects drink
Learn it in: Flowering plants (Grade 2), Pollination (Grade 3)
need
ScienceFrom Grade 1
something a living thing must have to live
Learn it in: Basic needs of living things (Grade 1), Animal needs (Grade 1), Animal survival needs (Grade 2)
nerve
ScienceFrom Grade 3
a thread that carries messages
Learn it in: The brain (Grade 3), Movement (Grade 4), Nervous system introduction (Grade 5)
nest
ScienceFrom Grade 1
a home that birds build
Learn it in: Animal shelters (Grade 1), Birds (Grade 3)
newton
ScienceFrom Grade 3
the unit of force
Learn it in: Forces (Grade 3), Contact forces (Grade 5), Forces (Grade 6)
niche
ScienceFrom Grade 3
the role of a living thing in its habitat
Learn it in: Habitat relationships (Grade 3)
night
ScienceFrom Grade 1
the time when the Sun is not in our sky
Learn it in: Light and darkness (Grade 1)
nitrogen cycle
ScienceFrom Grade 5
the movement of nitrogen through air, soil and life
Learn it in: Matter cycling introduction (Grade 5)
noise
ScienceFrom Grade 1
unwanted or too loud sound
Learn it in: Loud and soft sounds (Grade 1), Noise pollution (Grade 4)
non-contact force
ScienceFrom Grade 3
a force that works without touching
Learn it in: Magnetic forces (Grade 3)
non-living
ScienceFrom Grade 1
never alive, so it does not grow or need food
Learn it in: Living and non-living things (Grade 1), What are animals (Grade 1)
non-renewable
ScienceFrom Grade 4
will run out one day
Learn it in: Natural resources (Grade 4), Energy conservation (Grade 5), Non-renewable resources (Grade 6)
noon
ScienceFrom Grade 4
midday, when the Sun is highest
Learn it in: Apparent movement of the Sun (Grade 4), Day and night (Grade 6)
north pole
ScienceFrom Grade 3
the end that points to Earth’s north
Learn it in: Magnetic poles (Grade 3)
nuclear fusion
ScienceFrom Grade 6
joining of small nuclei to release energy
Learn it in: The Sun (Grade 6)
nutrient
ScienceFrom Grade 3
something in food the body needs
Learn it in: The intestines (Grade 3), Soil and plant growth (Grade 3), Decomposers (Grade 4)
nutrient cycle
ScienceFrom Grade 5
the movement of nutrients through living and non-living things
Learn it in: Biosphere (Grade 5)
nutrients
ScienceFrom Grade 3
minerals plants take from soil
Learn it in: Plant growth requirements (Grade 3)
nutrition
ScienceFrom Grade 2
the food your body needs
Learn it in: Science in health (Grade 2), Nutrition (Grade 3)
nymph
ScienceFrom Grade 3
a young insect that looks like a small adult
Learn it in: Animal life cycles (Grade 3)