Glossary: Terms Starting with E
64 definitions in Science with links to the lessons that teach each word.
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ear
ScienceFrom Grade 1
the part of the body for hearing
Learn it in: What is sound (Grade 1), Vibrations (Grade 2)
earth wire
ScienceFrom Grade 6
a safety wire that carries fault current away
Learn it in: Electrical safety (Grade 6)
earwax
ScienceFrom Grade 1
the sticky stuff that protects the ear
Learn it in: Protecting our hearing (Grade 1)
echo
ScienceFrom Grade 2
a sound that bounces back
Learn it in: Sound and distance (Grade 2), Sound absorption (Grade 4), Sound propagation (Grade 6)
eclipse
ScienceFrom Grade 4
when one object blocks light from another
Learn it in: Earth–Sun–Moon relationships (Grade 4), Moon phases (Grade 6)
ecosystem
ScienceFrom Grade 3
living things and their surroundings working together
Learn it in: Ecosystems introduction (Grade 3), Ecosystems (Grade 4), Ecosystems (Grade 5)
effect
ScienceFrom Grade 2
what happens because of something
Learn it in: Human effects on habitats (Grade 2), Forces (Grade 3)
efficiency
ScienceFrom Grade 5
how much input energy is useful output
Learn it in: Energy conservation (Grade 5), Energy efficiency (Grade 6)
efficient
ScienceFrom Grade 4
wasting little energy
Learn it in: Lamps (Grade 4), Energy transformation (Grade 5)
effort
ScienceFrom Grade 2
the push or pull you use
Learn it in: Sloping surfaces (Grade 2), Levers (Grade 2), Levers (Grade 4)
egg
ScienceFrom Grade 2
a case holding a young animal before it hatches
Learn it in: Animal offspring (Grade 2)
egg cell
ScienceFrom Grade 6
the female sex cell
Learn it in: Reproductive system introduction (Grade 6)
elastic energy
ScienceFrom Grade 5
energy stored in stretched or squashed things
Learn it in: Forms of energy (Grade 5)
electric shock
ScienceFrom Grade 4
a harmful flow of electricity through the body
Learn it in: Electrical safety (Grade 4)
electrical insulation
ScienceFrom Grade 6
covering conductors to protect users
Learn it in: Insulators (Grade 6)
electricity
ScienceFrom Grade 2
a form of energy that moves through wires
Learn it in: Everyday energy uses (Grade 2), Electrical safety (Grade 2), Electricity in everyday life (Grade 4)
elevation
ScienceFrom Grade 4
how high the Sun is in the sky
Learn it in: Shadows during the day (Grade 4)
emergency
ScienceFrom Grade 1
a time when you need help quickly
Learn it in: Basic personal safety (Grade 1), Weather preparedness (Grade 3), Electrical safety (Grade 4)
endangered
ScienceFrom Grade 1
at risk of disappearing
Learn it in: Protecting animals (Grade 1), Conservation (Grade 4), Biodiversity conservation (Grade 6)
energy
ScienceFrom Grade 2
what makes things happen or work
Learn it in: Everyday energy uses (Grade 2), Producers (Grade 3), Interactions among body systems (Grade 5)
energy chain
ScienceFrom Grade 5
a line showing energy forms in order
Learn it in: Energy transformation (Grade 5)
energy flow
ScienceFrom Grade 4
movement of energy from one organism to the next
Learn it in: Food chains (Grade 4), Energy flow (Grade 5)
energy pyramid
ScienceFrom Grade 5
a diagram showing energy at each level
Learn it in: Energy flow (Grade 5)
energy transfer
ScienceFrom Grade 6
moving energy from one place or object to another
Learn it in: Energy transfer (Grade 6), Forces and energy review (Grade 6)
engine
ScienceFrom Grade 2
a machine that makes movement
Learn it in: Science in transportation (Grade 2)
engineer
ScienceFrom Grade 3
a person who designs and builds solutions
Learn it in: What is engineering? (Grade 3), Engineering design (Grade 4), The engineering design process (Grade 5)
enhanced
ScienceFrom Grade 6
increased by human activity
Learn it in: Greenhouse effect introduction (Grade 6)
environment
ScienceFrom Grade 1
all the living and non-living things around us
Learn it in: Plants in our environment (Grade 1), Keeping our environment clean (Grade 1), What is the environment (Grade 1)
environmental change
ScienceFrom Grade 3
a change to the surroundings of living things
Learn it in: Environmental changes (Grade 3)
enzyme
ScienceFrom Grade 6
a chemical that speeds up digestion
Learn it in: The digestive system (Grade 6)
equilibrium
ScienceFrom Grade 5
a state with balanced forces
Learn it in: Balanced and unbalanced forces (Grade 5), Balanced forces (Grade 6)
equipment
ScienceFrom Grade 2
tools and materials we use
Learn it in: Science safety (Grade 2), Scientific equipment (Grade 3), Planning investigations (Grade 4)
erosion
ScienceFrom Grade 3
the carrying away of soil or rock
Learn it in: Soil erosion (Grade 3), Erosion (Grade 4), Plants and environmental sustainability (Grade 5)
error
ScienceFrom Grade 4
a difference from the true value
Learn it in: Measuring accurately (Grade 4), Investigation evaluation (Grade 5), Measurement and accuracy (Grade 6)
escape velocity
ScienceFrom Grade 5
the speed needed to leave a planet
Learn it in: Gravity in the Solar System (Grade 5)
ethics
ScienceFrom Grade 6
ideas about right and wrong
Learn it in: Presenting engineering solutions (Grade 6)
etiolated
ScienceFrom Grade 5
tall, pale and weak from too little light
Learn it in: Sunlight and plant growth (Grade 5)
evaluate
ScienceFrom Grade 2
to judge how well it worked
Learn it in: Simple design project (Grade 2), Evaluating investigations (Grade 4), Light investigations (Grade 4)
evaluation
ScienceFrom Grade 6
judging how good the investigation was
Learn it in: Force and motion investigations (Grade 6), Scientific investigation review (Grade 6)
evaporation
ScienceFrom Grade 3
a liquid changing into a gas
Full explanation with examples and practice →
Learn it in: Evaporation (Grade 3), Evaporation (Grade 4), Evaporation and separation (Grade 5)
evidence
ScienceFrom Grade 1
what we see, hear or measure that shows something is true
Learn it in: What is science? (Grade 1), Reviewing scientific observation (Grade 2), Scientific questions (Grade 3)
exercise
ScienceFrom Grade 1
moving the body to keep strong and healthy
Learn it in: Exercise and rest (Grade 1), Exercise (Grade 4), Healthy lifestyles (Grade 5)
expand
ScienceFrom Grade 2
to take up more space
Learn it in: Freezing (Grade 2), Gases (Grade 3), Freezing (Grade 4)
expansion
ScienceFrom Grade 5
getting bigger when heated
Learn it in: Particle model introduction (Grade 5)
explanation
ScienceFrom Grade 5
a statement of why something happens
Learn it in: Scientific explanations (Grade 5)
extension
ScienceFrom Grade 3
how much longer a spring gets
Learn it in: Measuring simple effects of forces (Grade 3)
extinct
ScienceFrom Grade 5
no longer existing
Learn it in: Biodiversity (Grade 5), Biodiversity conservation (Grade 6)
extraction
ScienceFrom Grade 6
taking resources from the ground
Learn it in: Natural resources (Grade 6)
extreme weather
ScienceFrom Grade 3
dangerous or unusual weather
Learn it in: Extreme weather (Grade 3)