Second week's journal

I read " The Trick to the Archer Fish’s Powerful Attack" in this weekend.

Sorce : http://www.nytimes.com/2012/10/30/science/the-technique-behind-an-archer-fishs-powerful-attack.html?ref=science

This article is about how to capture archer fish's prey. They usually capture their prey by using their unique power. According to this article, they spit out powerful jet water, and then they can drop their prey such as insects from a branch. It becomes their dinner. And they can change speed of thire jet water, so they can certainly get their prey. This large drop of water is able to hit and knock down prey with incredible force.

vocablaries:

1. capure (verb):to catch someone or something after chasing or following it.

ex.) A eagle captured a mouse for a food.

2. stream (noun):a natural flow of water that moves across the land and narrower thatn a river.

ex.) They crossed a stream to capture the butterfly.

3. modulate (verb):to change the form

ex.) I modulated my voice.

4. velocity (noun): the speed at which something moves in particular direction.

ex.) The velocity of electrons is more fast than before.

5. hypothesis (noun):an idea that is suggested as an explanation for something, but that has not yet been proven to be true.

ex.) That hypothesis was disproved by one reseacher.