Glossary: Terms Starting with L
51 definitions in Science with links to the lessons that teach each word.
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label
ScienceFrom Grade 1
a word that names a part of a drawing
Learn it in: Recording observations using pictures (Grade 1), Drawing scientific diagrams (Grade 2), Designing simple solutions (Grade 3)
landslide
ScienceFrom Grade 4
a sudden slide of rock and soil
Learn it in: Water and land changes (Grade 4)
large intestine
ScienceFrom Grade 3
the wider tube that takes in water
Learn it in: The intestines (Grade 3), Digestive system (Grade 5)
larva
ScienceFrom Grade 2
a young insect that looks different from its parent
Learn it in: Butterfly life cycle (Grade 2), Animal life cycles (Grade 3)
latitude
ScienceFrom Grade 6
distance north or south of the equator
Learn it in: Weather and climate (Grade 6)
leaf
ScienceFrom Grade 1
the flat, usually green part of a plant
Learn it in: Plants as living organisms (Grade 1), Leaves (Grade 1), Reviewing plant parts (Grade 2)
leak
ScienceFrom Grade 1
a place where water escapes
Learn it in: Saving water (Grade 1), Water conservation (Grade 2)
leap year
ScienceFrom Grade 5
a year with an extra day
Learn it in: Earth’s revolution (Grade 5), Earth’s revolution (Grade 6)
LED
ScienceFrom Grade 4
a light-emitting diode that gives light efficiently
Learn it in: Lamps (Grade 4)
leg
ScienceFrom Grade 1
the part of the body we stand and walk on
Learn it in: External body parts (Grade 1)
length
ScienceFrom Grade 2
how long something is
Learn it in: Light and shadows (Grade 2), Shadow changes (Grade 4)
lens
ScienceFrom Grade 4
a curved transparent piece that bends light
Learn it in: Transparent materials (Grade 4), Refraction introduction (Grade 6)
level of organisation
ScienceFrom Grade 6
a step from cell to organism
Learn it in: Tissues and organs introduction (Grade 6)
lever
ScienceFrom Grade 2
a bar that turns on a point
Learn it in: Levers (Grade 2), Movement (Grade 4), Levers (Grade 4)
life cycle
ScienceFrom Grade 2
the stages of a living thing from start to start again
Learn it in: Plant life cycles (Grade 2), Life cycles (Grade 2), Animal life cycles (Grade 3)
life processes
ScienceFrom Grade 6
the activities that all living things carry out
Learn it in: Cells as basic units of life (Grade 6)
lifestyle
ScienceFrom Grade 5
the way a person lives every day
Learn it in: Healthy lifestyles (Grade 5)
ligament
ScienceFrom Grade 4
a strong band that holds bones together at a joint
Learn it in: Joints (Grade 4)
light
ScienceFrom Grade 1
what lets us see, from the Sun or a lamp
Learn it in: Leaves (Grade 1), What is light (Grade 1), Light energy (Grade 5)
light source
ScienceFrom Grade 2
something that gives out light
Learn it in: Sources of light (Grade 2), Light sources (Grade 4)
light-year
ScienceFrom Grade 5
the distance light travels in one year
Learn it in: The Sun as a star (Grade 5)
lightning
ScienceFrom Grade 1
a bright flash of electricity in the sky
Learn it in: Weather safety (Grade 1), Weather safety (Grade 2)
like poles
ScienceFrom Grade 3
two poles that are the same
Learn it in: Attraction and repulsion (Grade 3)
limestone
ScienceFrom Grade 3
a sedimentary rock used to make cement
Learn it in: Uses of rocks (Grade 3)
limitation
ScienceFrom Grade 4
a way a model is not accurate
Learn it in: Models of Earth and Moon (Grade 4), Scientific conclusions (Grade 6), Presenting engineering solutions (Grade 6)
line graph
ScienceFrom Grade 3
a graph that joins points to show change
Learn it in: Tables and charts (Grade 3), Tables and graphs (Grade 4), Tables and graphs (Grade 5)
liquid
ScienceFrom Grade 2
matter that flows and takes the shape of its container
Learn it in: What is matter? (Grade 2), Liquids (Grade 3), Melting (Grade 4)
litter
ScienceFrom Grade 1
rubbish left lying around
Learn it in: Keeping our environment clean (Grade 1), Clean and dirty environments (Grade 1), Habitat protection (Grade 2)
living
ScienceFrom Grade 1
alive and showing signs of life
Learn it in: Living and non-living things (Grade 1), What are animals (Grade 1)
living thing
ScienceFrom Grade 1
a thing that is alive, such as a plant, an animal or a person
Learn it in: What are living things? (Grade 1)
living things
ScienceFrom Grade 1
plants and animals
Learn it in: Plants and animals in our environment (Grade 1)
load
ScienceFrom Grade 2
the thing being moved
Learn it in: Levers (Grade 2), Materials and structures (Grade 3), Structures (Grade 4)
load test
ScienceFrom Grade 5
adding weight to see how much it carries
Learn it in: Testing structures (Grade 5)
loud
ScienceFrom Grade 1
with a lot of sound
Learn it in: Loud and soft sounds (Grade 1), Sources of sound (Grade 2)
lubricant
ScienceFrom Grade 5
a slippery substance that reduces friction
luminous
ScienceFrom Grade 5
giving out its own light
Learn it in: Light energy (Grade 5), Light (Grade 6)
lunar eclipse
ScienceFrom Grade 4
Earth’s shadow falls on the Moon
Learn it in: Earth–Sun–Moon relationships (Grade 4)
lungs
ScienceFrom Grade 3
organs used for breathing
Learn it in: Major internal organs (Grade 3), Respiratory system (Grade 5)