Browse "Nature & Geography"

Displaying 661-675 of 733 results

  • Article

    Thrush

    Thrushes (Muscicapidae) are a very large family comprising about 450 species of small passerines (perching birds) ranging 11-33 cm in length. 

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Thrush

  • Article

    Thunderstorm

    Thunderstorms usually occur on summer afternoons. While a thunderstorm typically affects a given locality for only an hour or so during its passage overhead, the entire lifetime may be as long as 6-10 hours, along a pathway of several hundred kilometres.

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Thunderstorm

  • Article

    Tick

    Ticks are small, bloodsucking arachnids that live as external parasites on terrestrial mammals, birds, amphibians and reptiles. Ticks belong to the order Ixodida, a group of parasitic mites in the superorder Parasitiformes. This superorder also includes the varroa mite, a destructive parasite of honeybees. About 900 tick species are known worldwide, of which 48 have been found in Canada. Although they are most diverse in tropical regions, ticks continue to be significant pests to humans and other mammals as far north as the Canadian tundra.

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    https://d3d0lqu00lnqvz.cloudfront.net/tick/Female-Black-Legged-Tick-on-Leaf.jpg Tick

  • Article

    Tidal Energy

    Tidal energy is a largely untapped, renewable energy source based largely on lunar gravitation. While the potential of tidal hydroelectricity has long been recognized, compared to river dams, tidal power projects are expensive because massive structures must be built in difficult saltwater environments.

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  • Article

    Tide

    The Earth is actually not in orbit around the sun but around the centre of mass of the Earth-sun system. Since all parts of the Earth move in the same orbit, they experience the same acceleration, but only at the Earth's centre is this acceleration exactly balanced by the sun's gravitation.

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    https://d3d0lqu00lnqvz.cloudfront.net/media/media/989a9feb-532c-452f-829d-b5fecf83d434.jpg Tide

  • Article

    Timber Slide

    A timber slide is a water-filled chute or runway built to carry “cribs” of timber around rapids and waterfalls. (See also Raft). Similar devices for individual pieces of wood were called “flumes.” Timber slides contributed to the growth of the timber industry in the 19th century (see Timber Trade Industry).

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    https://d3d0lqu00lnqvz.cloudfront.net/timbertrade/timberslidedukeandduchess.jpg Timber Slide

  • Article

    Time Zones in Canada

    There are six time zones in Canada covering four and a half hours. From west to east, these time zones are: Pacific, Mountain, Central, Eastern, Atlantic and Newfoundland. From the first Sunday in November to the second Sunday in March, these zones are referred to as standard time zones and may be abbreviated as PST, MST, CST, etc. From the second Sunday in March to the first Sunday in November, most of Canada follows daylight saving time. During this summer period, the time zones may be abbreviated as PDT, MDT, CDT, etc. The boundaries of the standard time zones are not necessarily the same as those of the corresponding daylight saving time zones. Boundaries shift because some municipalities choose not to participate in daylight saving time or to remain in it year-round. Saskatchewan follows CST year-round, and, as of 2020, Yukon follows PDT, also known as Yukon Standard Time, year-round. As of summer 2026, British Columbia will also remain in PDT year-round, now simply called Pacific time.

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    https://d3d0lqu00lnqvz.cloudfront.net/media/new_article_images/TimeZones/NewTimeZonesEN.jpg Time Zones in Canada

  • Article

    Titanium

    Titanium (Ti) is a metallic element estimated to form about 0.5% of the rocks of the Canadian SHIELD. Titanium minerals of commercial importance include the dioxides rutile and anatase, which are polymorphs of TiO2 and ilmenite (FeO.TiO2), a mineral that contains 52.7% TiO2.

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  • Article

    Toad Species in Canada

    Toad is a common name for frogs belonging to the family Bufonidae. The distinction is not firm, but the word toad is generally applied to frogs with relatively short legs and thick bodies, dry, often “warty” skin and reduced webbing between the toes. Five toad species are found in Canada, living in drier habitats than most other frogs. In Canada, other frogs commonly called toads are the Plains and Great Basin spadefoots (family Scaphiopodidae). For more general information about frogs (including toads) see Frog Species in Canada.

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    https://d3d0lqu00lnqvz.cloudfront.net/Toad/AmericanToad.jpg Toad Species in Canada

  • Article

    Tobacco

    Tobacco (Nicotiana tabacum) is an annual (potentially perennial) herbaceous plant of the nightshade family.

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  • Article

    Tobacco-Products Industry

    Tobacco (Nicotiana tabacum) is an annual herbaceous plant of the nightshade family. In Canada, tobacco growing expanded commercially in the late 19th century.

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  • Article

    Tomato

    Tomato (Lycopersicon esculentum) is a herbaceous perennial which, in Canada, is grown as an annual because of early frost. Fruits range from a few grams to over 450 gm. Tomatoes are usually red or orange but may be pink (colourless skin) or yellow. Tomatoes contain vitamin A, thiamine, riboflavin, niacin and ascorbic acid. Worldwide, two species are cultivated, L. esculentum (including common, cherry, pear, upright and large-leaf varieties) and L. pimpinellifolium. The tomato originated in Peru and was used by the Indians of South and Central America in precontact times. Introduced into Europe in the 16th century, the tomato was viewed with suspicion as a member of the nightshade family. There was no known commercial production before the early 1800s. 

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  • Article

    Tornado

    Tornadoes are a type of severe storm. They are typified by a funnel-shaped cloud descending toward the earth.

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  • Article

    Toronto Feature: Hurricane Hazel

    This article is from our Toronto Feature series. Features from past programs are not updated.

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  • Macleans

    Toronto's Record Snowstorm

    This article was originally published in Maclean’s magazine on January 25, 1999. Partner content is not updated. As a storm raged outside, the constantly ringing phones went unanswered at Environment Canada’s Toronto offices last Thursday. Like many other workplaces in the city, it was shut down - by the worst series of blizzards ever to strike Toronto.

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    https://thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Toronto's Record Snowstorm