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Listed under:  Language  >  Language conventions  >  Language usage  >  Archaisms
Moving Image

Word histories: how extraordinary!

Words can change over time and so can their meanings. The word 'extra' broke away from other words to become a word on its own. Professor Kate Burridge explains how this impacts on words like 'extraordinary'. She also explains the origins and meanings of the words 'hearse' and 'rehearse''.

Moving Image

Got or gotten? What a nightmare!

Words have a history. Knowing their history helps us to understand what they mean and why some people use them in different ways. Professor Kate Burridge explains how the use of the past tense of the verb 'get' (gotten) has changed, but is still in use by many people. She also discusses the history of the word 'nightmare'.

Interactive resource

Rainforest life: identifying living things

Help a scientist carry out field work in a rainforest. Explore the diversity of living things. Collect data about a rare plant. Examine the structure and function of leaves. Look at the process of photosynthesis. Dissect a flower and label its parts. Examine organisms found on the plant. Identify creatures that feed on ...

Interactive resource

Effects of light intensity on photosynthesis

Find out how light intensity affects the rate of photosynthesis in a plant. Adjust the light intensity of a torch beaming on a water plant and then observe how this affects the oxygen flow. Measure the amount of oxygen produced by the plant at various light intensity rates using the oxygen flow meter. Record your data and ...

Interactive resource

Life science: photosynthesis lab

Explore the effect of environmental factors on the rate of photosynthesis in an aquatic plant. Manipulate environmental variables including light intensity, carbon dioxide levels, temperature, and the wavelength of light to find out how each affect the rate of photosynthesis. Record and analyse the results in tabulated ...

Collection

Processes of plant growth

This collection contains digital curriculum resources. It is organised into five categories - factors affecting plant growth; movement of water in plants; genetic modification of plants; how different plants grow; and plant reproduction. Videos and images demonstrate plant genetic modification techniques, and a video discusses ...

Image

Leaf section with stomata, mesophyll and epidermis

This colour image is a dissected cross-section of a leaf at 55 times magnification. It shows the structure of the leaf, the organisation of cells, spaces between some cells and some internal cellular features. The structure includes the epidermis, mesophyll and stomata cells.

Image

Illustration of a marine food web

This illustration uses arrows to show how nutrients move through some organisms in a marine environment. The illustration contains producers and consumers, and a decomposer - a tube worm.

Image

Plant seedlings bending towards light source

This photograph shows how shamrock seedlings in a pot bend towards a light source. The plant pot has been placed near a window and the seedling stems have grown towards the light coming through the window.

Image

Stoma on surface of buttercup leaf

This photograph of a stoma (plural: 'stomata') and guard cells on a buttercup leaf was taken using a scanning electron microscope (SEM). Stomata are pores in the surface of a leaf. The stomata and guard cells regulate the gases entering and leaving a plant's leaf.

Image

Single stoma on a leaf surface

This is a photograph of a thin slice from the surface of leaf. The specimen has been stained and magnified 350 times under a light microscope. The stoma is surrounded by two guard cells. Chloroplasts can be seen within the guard cells.

Image

Photosynthetic phytoplankton

This is an image of a light micrograph of four specimens of 'Euglena sp', a photosynthetic phytoplankton. The image shows specimens of different shapes and sizes against a 100-micrometre scale. Clearly visible are the dark nuclei, cellular membrane and other internal cellular structures.

Image

Strings of cyanobacteria in ultraviolet light

This photograph of a filamentous cyanobacterium was taken with a microscope using ultraviolet light. Cyanobacteria are blue-green algae, but they have more in common with bacteria than with algae. They contain chlorophyll and a blue pigment and are photosynthetic.

Image

Synechococcus, a cyanobacterium

This is a photograph of a synechococcus cell, showing some of its internal structures. The internal thylakoid membranes are responsible for the photosynthetic process. This organism belongs to one group of cyanobacteria.

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Measuring photosynthesis and conductance

This is a colour photograph of a scientific instrument being used in the field to measure photosynthesis and stomatal conductance in grapevines. This instrument is able to make both measurements at the same time and is used by CSIRO scientists to study grape yields.

Collection

Plants that convert the Sun's energy: collection

This is a collection of 20 digital curriculum resources that explore the flow of energy in an ecosystem. The collection comprises 13 images, 4 interactive simulations and 3 video clips that highlight photosynthesis. Topics include the effect of light and carbon dioxide availability on photosynthesis, the role of phytoplankton ...

Collection

Photosynthesis and respiration: collection

This is a collection of 35 digital curriculum resources that explores the flow of energy and matter in an ecosystem. The collection comprises 25 images and 10 interactive simulations that highlight the processes of photosynthesis and respiration. Students can explore topics such as the transport of carbon through a plant ...

Teacher resource

Plants that convert the Sun's energy: teacher resource

This teacher resource provides a range of possible activities that cover aspects of the science continuum for the flow of energy in an ecosystem. This teaching resource provides a range of classroom activities that explore the concept of the flow of energy in an ecosystem, specifically investigating the process of photosynthesis. ...

Teacher resource

Photosynthesis and respiration: teacher resource

This teacher resource provides a range of possible activities that cover aspects of the science continuum for the flow of energy and flow of matter in an ecosystem. This teaching resource provides a range of classroom activities that explore the concept of the flow of energy and flow of matter in an ecosystem, specifically ...

Teacher resource

Chemical reactions and organic compounds: teacher resource

This teacher resource provides a range of possible activities that cover aspects of the science continuum for the flow of energy and flow of matter in an ecosystem. This teaching resource provides a range of classroom activities that explore the concept of the flow of energy and flow of matter in an ecosystem, specifically ...