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1. What do you like about your initial design?

I liked how we thought about how we can keep the vehicle moving. I think that our idea would work really well if we actually knew how to do it.

2. What has been challenging about the initial design?

Most of the properties or details of the sketch did not make it in. Also, the spool was much more different than I had imagined so the materials didn’t work so well.

3. How well did your racer perform in the first race? Did it go far? Fast?

It did not go very fast or very far but it surprised me. My partner and I were both thinking there was no way this would work. Later when we tested it we were surprised that it actually went a pretty far distance.

4. How will you modify your design for the second race? What variables do you feel will affect how far and fast the racer goes? Why?

We think we have the correct design just the wrong materials. We are essentially going to upgrade our design so that the body is made of wood and not cardboard.

5. What have been your strengths and challenges during the design process?

One strength I had was I could always come up with smart ideas. that brings me to the problem. I didn’t know how to implement the changes.

6. What questions do you have?

Why is something that is not a car allowed to race? I thought it was a challenge where you needed to build a car!

Do you think the temperature of the room effects the time it takes an odor to get to your nose? Explain your answer. Provide 2 pieces of scientific reasoning to explain why.

I think that the temperature does not affect the odor. If we think about this we can say that temperature could provide different atoms to mix with the molecules. However, if we think about temperature in the last unit we learned that temperature is an abiotic factor meaning it can only affect the molecules by making them either warmer or colder. So the final answer is no because there is no such thing as hot or cold types of atoms.

Scientist Dylan Gray

-Peace out

The Sea Lamprey have been invading the great lake food chain and the trout, causing their population to decrease. The trout have been continuously lowering ever since the Sea lamprey came to the great lakes attached to those boats according to the article. It’s been going on for about 10 years now.

When we dissected we found millions of razor-sharp teeth. I took one out and examined it with a magnifying glass. The teeth are very sharp, like tiny buzz saws. I almost touched one! Eek! This shows how they can eat any fish without getting killed by anything. The average amount of teeth is 60! Using those razors it can bite through almost anything. The lamprey uses their teeth to chomp into the side of the trout and then eats all of the insides of the fish. This can help them get food for their kin. The lamprey can stay on a trout for hours, sucking the insides of it.

The Lamprey’s eggs are very tiny. However, they have 60 to 100,000 causing reproduction very often.  All of this can show that the lamprey can reproduce and cause to invade even more. Using this information can show you that the more sea lamprey there is the less trout there is. With the amount of Sea lamprey towering over the trout population, the trout is in danger of extinction in the Great Lakes

Sea Lamprey looking at the shape looks like it swims very fast. Using these abilities, the lamprey can swim and chomp
through anything in its way. Using its fin and wiggling its body it can soar through the waters. They are called S-Swimmers. Meanwhile, the trout are different swimmers. The trout use their fins and body to push themselves and gain momentum. They are Half-Body swimmers Other lampreys (Otherwise known as native) do not have a record for invading anything. Sea lamprey needs the most food, therefore, eating the trout. The sea lamprey has no predators allowing it to eat all the other fish. The lamprey is very fast causing them to be faster than the trout. This causes them to be able to chase a trout and always catch it.

The internal parts of the fish were very important to its processes. It had lots of long thin tissue. It was a little hard but we found some intestines, a heart, and other things. The most interesting thing I saw was how small of a stomach it has compared to how big of an appetite it eats! There was a long string of intestines that looked like almost human, intestines. This means that the lamprey is lighter and quicker,

Which would make it able to chase the trout because of their speed.

• What is the value of dissecting?

The value of Dissecting is being able to look inside of fascinating creatures. It helps you learn to also be brave and not get grossed out by dead things.

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

It showed me that the sea Lamprey has lots of teeth and that’s how it chomps through anything in its way. Also on the external area looking at the overall shape and fins, it looks like it swims fast as well.

• 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 really enjoyed the process! It made me less grossed out at dead things and I thought it was just fascinating! I was one of the first people to touch the Lamprey! I really enjoyed this and I hope we can do it again!

What do you think invasive species means?

I Think it means a species that invades other habitats

What does it mean to invade something?

It means to come into something without asking and do bad stuff.

Can animals invade?

Yes they can because they can steal other habitats

What about plants?

Yes because they can invade people home for an example moss.

How might invasive species affect other organisms in their environment?

They might lower the numbers because of the fewer places to live.

Today in science we tested a bean seed and a potato for 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:

There is starch in potatoes!

Evidence:
Today we tested Iodine on different things to test them for starch. The only one that turned black was the potato, therefore, has starch

Reasoning

I know that a potato is a food that organisms need because when we tested Iodine on the potato it turned black saying that it has iodine

*Explain the trend of increases and/or decreases for both the rabbit and wolf populations between the years 1930-1950

The rabbit constantly went up really high and then went down really low it was like a really crazy roller coaster! The wolf did the same just didn’t go nearly as high.

*Look at the years 1987 and 1993. Explain your thinking as to why there is such a large difference in population numbers between those five years.

I think it is because people started to go hunting back then so people would kill a lot of animals.

*Analyze the population changes between 2000-2005.

It went really high and then really low.

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