Argentina: Trained Killers

After weeks of hiking in Patagonia (the southern area of Argentina and Chile), it was a nice change to head north for some warmer weather. (It's still weird for me to say 'north' is warmer, but remember, the closer you are to the equator, the warmer and more constant the weather is, generally).

A Guanacho (kind of like a llama) crossing the water.
Guanachos are one of the only mammals
that can drink salt water.

It was a straight 32 hour bus ride that brought me to Puerto Madryn, Argentina on the eastern coast of South America. Here, it's easy to take a one-day car trip around Peninsula Valdes, an area known around the world to see Right Whales breeding. You can stand on the shore and watch them in the water...you don't even need to get in a boat to see them! We weren't there for the whales, though, (June-December is the best time to see whales, and it was the end of March when we arrived). Peninsula Valdes is known for another animal phenomenon: it's the only place in the world where you can see orcas beach themselves in order to catch seal and sea lion pups from the shore.

 

Peninsulas are areas of land that stretch away from the mainland, like an island, but still connected. They're surrounded by water on three sides.

Orcas, otherwise known as killer whales, are actually not whales, they're dolphins. They are incredibly intelligent hunters. While on the boat to Antarctica, I learned that some kinds of orcas work in teams to hunt seals lounging on icebergs. One orca will nudge the iceberg underneath to try to push the seal off, then another one will nudge the other side. They'll keep rocking the iceberg until the seal gets tired or confused or falls off and they can catch it. To know that their prey is not sick, orcas only eat animals that they have hunted themselves.

When we arrived in Puerto Madryn, we were disappointed to hear that it had been a difficult year for spotting orcas. For unknown reasons, they weren't coming as close to the coast as usual and they were hunting for food in other areas. So we didn't have our hopes up very high.

Fortunately, there are a few other things to see on the peninsula. We stopped at a large sea lion colony and watched the pups play in the surf. Sea lions, and elephant seals make an awful racket, barking and slapping around on the sand.

We also saw our fourth penguin species: the Megallanic. Larger than the three types we saw in Antarctica, these were also much quieter. They burrowed into the dirt to get away from the hot sun.

While we were observing the penguins, a truck came barrelling along the road with a siren on top spinning and wailing. Our driver quickly called to us, waving his arms frantically. "Orcas!" He shouted, "They've spotted orcas." We ran to the van and climbed in. He drove us to one of the best orca viewing point on the peninsula.

We waited nervously as they weren't actually there yet. Someone had spotted them down the coast and they were heading in our direction. But they could decide to turn around or go further out to sea. We crossed our fingers. Then one person pointed, and another called out, and we turned to see a group of five orcas swimming towards us, extremely close to the shore.

I couldn't believe how close to the beach they were! We watched them swim back and forth for an hour, with seals lying right there on the beach and even some swimming in the water, but they didn't try to attack. It was still so incredible to see them so closely. We left feeling very lucky and satisfied with our experience!

Around the World: How Tall is Tall?

You might be wondering how all of these tall buildings and monuments I've been seeing stack up against each other. Sometimes, things look really big because there isn't anything else around it, or because everything else around it is very short. Sometimes, buildings can look shorter than they are because they're surrounded by really tall things. Here, I'll line them up to show you how tall they really are.

First, let's do a quick review of the standard units of measurement. I like to use a saying to help me remember the metric units:

"King Henry's Daughter Makes Delicious Chocolate Milk"

The first letter of each word stands for a unit of measurement:

Kilometers Hectometers Decameters Meters Decimeters Centimeters Millimeters

Or, in their short forms: km hm Dm  m dm  cm  mm

If you can remember this saying, then you'll remember the order of the units of measurement and easily be able to tell how many of one unit is equal to one of something else. For example, there are 10 mm in 1 cm; there are 10 cm in 1 dm. There are 10 dm in 1 m, and so on.

I will use meters to show how tall these buildings are. If you can picture a meter stick, then you'll have an reference to go by. For me, 1 m is equal to the distance between my feet and my hips.

So, let's take a look at the height of these World Famous Buildings standing side-by-side.

     

Eiffel Tower, France: 324 m                St George's church, Ethiopia: 12 m

          

  Faro, Uruguay: 34 m                        Shiva statue, Mauritius: 33 m 

           

Qutb Minar, India: 73 m                 Calgary Tower, Canada: 191 m

     

CN Tower, Canada: 553 m                        Taj Mahal, India: 73 m

To see the difference in height between these structures, it would be even easier if we graphed them. I'll start by putting the heights up the y axis (the vertical line), and the names of the structures along the x axis (the horizontal line). Then, I'll use bars to show their heights. Now, I can really see how tall the CN Tower is compared with the other structures!

Organizing information in a graph is a great way to make more sense of it!

Chile: Rockin' in Torres del Paine

The Andes is the world's longest mountain range, stretching over 7 000 km through 7 countries in South America. When I went to Antarctica, I learned that the Andes range goes even further... underwater... to Antarctica! The Andes is also the tallest mountain range outside of Asia with its peak, Mount Aconcagua, in Argentina, rising to 6962 m in elevation.

In Chile and Argentina, I did some hiking in some beautiful National Parks. I was amazed by the types of rock faces we were seeing; they looked so different from our Rocky Mountains back home. So I was curious to do some research to learn more about how these rocks and mountains were formed. I'll focus on Torres del Paine in Chile, one of the world's most spectacular massifs.

It all started 12 million years ago...

Hot, volcanic magma spilled over the earth, cooling and hardening into the igneous rock called granite. Granite is very tough, it's about a 6.5 on the Moh's hardness scale of rocks. Thousands of years passed where layers of sedimentary rock on top helped to compress the granite even more.

Glacier Gray

Glaciers came next, covering the area. As they grew, retreated (calved), and shifted they wore away at the rocks (called erosion). (Check out my previous post about glaciers.) The glaciers lifted the layers of softer sedimentary rock and moved it as they moved. The rocks were slowly worn away until only hard, resistant rock was left: granite, in the shape of impressive, near 3000 m tall towers now called Torres del Paine.

I spent three days hiking and camping around the park. I saw one of the ancient glaciers, named Glacier Gray, and I woke up at 4 am to hike to the towers for sunrise. Seeing the first light of the day hit them made them even more spectacular!

El Calafate, Argentina: Icy Discoveries

In the mountains in Argentina, close to Chile, is the Parque Nacional Los Glaciares (Glacier National Park). At its South end, is the town named El Calafate, and it is the perfect place to stay if you love snow and ice. That's because it's only an hour or so outside of the third largest glacier in the world, and one of the only ones that's not receding (getting smaller). The glacier's name is Perito Moreno and it is roughly 30 km long, 5 km wide, and 60 m tall.





The glacier formed in a valley in between these Andean mountains, a place where many storm clouds have emptied out their snow. The snow builds up and the pressure of it turns the snow in to ice. Gravity pulls the ice down the hill and the bottom section grabs onto soil and rock as it goes, giving it the look of lines of dirt in it. As it moves, the ice can also crack, creating crevices. The sun warms the ice, and some of it melts, meaning that the glacier sits on a river or lake. When sections melt or crack, it can make parts fall off, into the water, which is really exciting to see!



The other really cool thing is its colour. The glacier looks blue because the ice is very compacted, meaning light has a long way to travel through it. The light refracts (breaks into the colour spectrum) and blue light is the strongest wavelength of colour we can see, so the ice looks blue.




Even though you can't really see the glacier moving because it's going so slowly, you can hear it! It creaks and cracks and groans as parts shift and melt. The really exciting part is when you see a section break off and fall into the water. Because the glacier is so big, it makes some of the chunks look really small. But when you see how big the splashes are that it makes, you realize just how big those chunks of glacier ice are!