Yosemite video Flashcards

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1
Q

Sequoia trees in Yosemite are how old, generally?

A

Generally thousands of years old

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2
Q

Are these the biggest trees in the world?

A

Yes

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3
Q

Name another super large tree species in Yosemite?

A

Ponderosa pine and sugarpine

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4
Q

The Grizzly Giant Sequoia is how large in diameter?

A

27.5 feet

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5
Q

The Wawona Tunnel Tree had its tunnel cut in what year?

A

1881

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6
Q

What is the “usual” cause of demise of Sequoia trees?

A

wind in the wintertime and heavy snow

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7
Q

The “idea of preserving this grove of big trees”… later led to the idea of establishing WHAT in the U.S.?

A

The larger expansion of national parks (our national parks)

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8
Q

The Half-Dome hike is how many miles in round trip?

A

14 miles

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9
Q

How long do most people need to hike to the top of Half Dome and back?

A

12 hours

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10
Q

From the top of Nevada Fall, people can get dehydrated. How many 1-liter bottles will you need for the hike?

A

4 1-liter bottles

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11
Q

The Cables on the Dome are “much harder to go _____ than go _____.”

A

down, up

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12
Q

Is there a fence on top of Half-Dome to prevent falls?

A

No

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13
Q

Most accidents occur on the cables occur when the _____ is ______.

A

rock, wet

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14
Q

What dangerous thing happens to Half-Dome “all the time”?

A

Thunderstorms (lightning)

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15
Q

According to Steve Baumgardner, who was on “the Cables” during a storm, “the cables became” WHAT?

A

electrified

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16
Q

Are most of the people who hike Half Dome “serious hikers”?

A

No

17
Q

At the top of Half-Dome, how many vertical feet are you above the valley?

A

5,000 vertical feet

18
Q

From which part of Half-Dome do rocks usually break away?

A

Overlook side (cliff side)

19
Q

And how frequently do rock-slides, or rock-falls, from Half-Dome occur?

A

every 3-5 years