Do you think the temperature of the room affects the time it takes an odor to get to your nose? Explain your answer. Provide two pieces of scientific reasoning to explain why.

I don’t think so because there are no heat or cooling atoms that make the odor stick to the heat atoms. Another piece of evidence heat goes up and if there is a lot of heat in the air the heat atoms will go up instead of on the odor particles. 

Did the Sea Lamprey Cause a Decline in the Trout Population?

The trout population is decreasing because of the invasion of the Sea Lamprey. According to the lesson, 5 fishermen say that the trout they catch is either dead or have massive holes in their sides. They also catch less and less trout every day. When he fished at his spot this year, he caught twice as many trout last year. The trout has a small hole only the size of a quarter but it is very deep. This means that ever since the Sea lamprey got here, the trout population got halved. When the Sea Lamprey came to the Great lakes the trout population decreased greatly. From 1950 to 1970 the trout population decreased and the Sea Lamprey increased. The Sea Lamprey is an invasive species so they came and killed all of the trout and increased their population to 300,000. This means that the trout are heavily outnumbered. Which means that there is probably more than one sea lamprey for every trout. In food webs, the Sea Lamprey have no predators and have a ton of prey. This is important because the sea lampreys population is way more than the trouts and might even be so low that they could go extinct in a few years. This shows that ever since the Lamprey got here the trout population went down due to a combined effort from Lamprey and other trout predators.

It was discovered that the Sea Lamprey’s eggs have a big reason for being dangerous, they can carry 60,000  to 100,000 eggs which means they reproduce extremely fast. Every 1 female that dies giving birth means about 50,000 Sea Lamprey hatch every time a female lays eggs. This means that the sea lamprey has way more of their species than the trout. Which means that the Sea lamprey has so many more of its species the Lamprey kill more trout faster.

Another big factor is the way the Sea Lamprey swim. The sea lamprey is an S-Swimmer which means they use their whole body to move. The trout are half-body swimmers. Which means they are slower and its movements are more sluggish than the sea lamprey. This means that the trout have little chance of getting away with all of their blood.

• What is the value of dissecting?

It’s important because if we didn’t dissect then 1. populations will have more than it needs messing up the rhythm 2. so we can get accurate descriptions.

• How did the dissection help you understand what is happening between the sea lamprey and the trout?

It got me thinking about how the sea lamprey actually affects other animals.

• How did you feel about dissection? If you enjoyed the process, why did you enjoy it? If you did not enjoy it, what was difficult about it?

I liked the second part because I knew what was coming after the first. Because we got to look inside the lamprey and got to cut it ourselves. Actually cutting the animal because of the sound it makes.

What do you think invasive species means?

I think it means that species take territory away from other animals.

What does it mean to invade something?

To take something with force.

Can animals invade?

Yes, because there are some territorial animals like wolves they like to have territory and the other wolves want to take it away.

What about plants?

No, because plants just grow wherever and whenever they want.

How might invasive species affect other organisms in their environment?

The other animals might die because of fights that other “nations” have to take territory, they could starve from lack of food, and their homes could get taken away.

Today in science we tested a bean seed and a potato for the starch to answer the question, “Do plants contain the food that organisms need?” Below, is my scientific explanation that explains what we learned and discovered from our lab today.

Image of the lab: 

Claim: Plants contain the food needed by organisms

Evidence: We tested the potato and bean with Iodine and it showed positive for both

Reasoning: I know that potatoes and seed are food because I tested with Iodine and it showed positive for potatoes and bean

• Potential energy: energy that is stored
• Kinetic energy: equivalent to motion energy
• Conservation of energy: The basic laws of physics.
• Gravity: What makes us sty down on earth
• Velocity: How fast you can make it go
• Friction: When two objects scrape together
• Slope: Ride/Run

Visuals of my project: There is a tall tube, midway there is a loop, and it ends.

Roller Coaster Phase II

Summary of my project: My team and I tested the second version of our roller coaster and we think it went well.  The design we tried in phase I failed because it got cockeyed due to poor alignment.  We were unable to fix the bend in the tube and decided to move on to phase II.  The second design for our roller coaster was easier to keep aligned because we only used one tube instead of four as in our previous attempt.  My team and I decided to mount our roller coaster on a wall rather than on a shelf or on the floor.   In phase II of our design, we decided to only have 1 loop (last time we had two).   We decided this would work better because in our first attempt the tube collapsed and blocked the marble.  We could not find a way to keep the tube open when we put in a loop.

Today was the day! We shared our boats. My boat was the HMS HIPPO(name pat. and pending). I messed the boat up but then Eshamah21. He made the boat move FORWARD not BACKWARD.