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4th Grade Science

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4th Grade Science Class 9/23/19

This afternoon, we reviewed last Friday's lesson by completing the following:

1. Inertia depends on mass or weight. 
2. The more mass something has the more inertia it has. 
3. The more inertia something has the more energy needed to move it. 
4. Momentum depends on speed and mass. 
5. The more momentum an object has, the more energy it has.  
 
Then, we read about energy transfer and types of collision on pages 50 and 51. 
 
We answered the question on page 51. We wrote: 

You hear a loud crash, tires screeching, sound of glass breaking, and crunching metal. You might see smoke, broken metal on the ground or crumpled up, broken lights, injured people, broken glass, and air bags deployed. All of the energy of motion of a car is transformed into sound and heat. 

We ended the class with a video on this content. We wrote some notes in the notes section on page 51.

A marble has less mass than a bowling ball. Because of this, it will take less energy to move it. When it is in motion and is moving at the same speed of a bowling ball, it will have less momentum. 

4th Grade Science Class 9/20/19

This morning, we reviewed our car crash investigation and then discussed inertia and momentum on pages 48-49. We had a lot of drawings to show examples of this and some great discussion!

4th Grade Science Class 9/19/19

This afternoon, we completed the toy car crash investigation on pages 44-46. The students had a lot of fun with this, and they did a great job!
 
We recorded the following in the book"

11. The stationary car moved farther when a car collided into it with greater speed. The noise also increased with greater speed. 
12. 1. How far can the car at rest go if I keep increasing the height?

2. How could I reduce the amount of noise produced by impact?

13. Students drew the setup we had independently. 

4th Grade Science Class 9/17/19

This afternoon, we began lesson 3 with the probe on page 41. Then, we encountered the lesson phenomenon on page 43 with a video and recorded some questions. Next, we made a prediction for the investigation we will do tomorrow on page 44. We finished class watching a video on the laws of motion. We recorded the laws in our notebooks. 

4th Grade Science Class 9/16/19

This afternoon, we revisited the probe on pages 23. We wrote: 
 

After the lesson, I agree with Jumon because I learned that energy cannot be created nor destroyed, but it can change forms. The roller coaster has multiple forms of energy from top of the first hill to the end of the ride.

 Then, we answered our phenomenon questions together. We wrote: 

1. How fast are these cars moving? I think these cars are moving over 100 mph. 

2. How do speed and energy work together? Speed and energy work together in that, the more speed an object has, the more energy it has. 

3. How does the car move so fast? The car is able to move very fast because it has a powerful engine.

4. What makes the car go? The car is able to go because it converts energy from the fuel when we press on the pedals. 

After the phenomenon questions, we completed the lesson 2 review on pages 38 and 39 together. We wrote:

Summarize it 

When the race cars are moving faster, they have more energy of motion. The energy of motion of an object depends on its speed. When they are moving slower, they have less energy. The mass of the cars also affects their energy of motion. If the cars are lighter, they can accelerate at a faster speed using less energy. 

1. The faster an object moves, the greater its energy. When the ramp was its highest, the ball moved the fastest because it has the most energy of motion. 

2. C. Both stored energy and energy of motion 

3. As the cheetah's speed increases, the more energy of motion it has. 

Finally, we ended the class planning for our module project on page 62. 

I will need to use trial and error to find the perfect height of the hills to include in my roller coaster design. I know that the heights of the hills will determine how fast the steel ball travels. the greater the speed, the more energy of motion it will have to push the stationary steel ball into the cup. 

WE WORKED HARD TODAY!! :) Happy Monday!

Students should start collecting the cardboard tubes from paper towels and toilet paper for this project after lesson 3. 

4th Grade Science Class 9/13/19

This afternoon, we investigated how mass would affect how far another object would travel. We completed the investigation on pages 36 and 37 together. Before conducting the investigation, we made predictions. Then, we did the investigation and recorded our data. We practiced calculating averages and then answered our analysis questions. 
 
11.Yes, the data supported my prediction. The bottle with the most mass moved the cup the farthest, showing that it had the most energy. (depends on student's prediction)
 
Communicate Information 
The energy of motion increases with increasing mass. As the mass of the water bottle increased, it was able to move the cup farther, showing that it had more energy of motion. 
 
12. The height could affect the speed of the bottle. The height of the ramp remained the same so that the experiment would only have one variable to test: effect the mass of the water bottle had on the distance the cup traveled. 

4th Grade Science Class 9/12/19

This afternoon, we went over exam 1 and read the STEM career connection on page 43. 

Inspire Science Online Access

Good morning all, 
 
I was unaware that the students have an online access with their science books. If you don't mind, could you please send in a copy of your receipt or send a picture to me through email so that we can set up their accounts? I would greatly appreciate it. 
 
Thanks for all your do! 
Ms. Trickett 

4th Grade Science Class 9/9/19

This afternoon, we watched videos about forces and energy and did practice questions to review for tomorrow's exam. 

4th Grade Science Class 9/6/19

This morning, the students spent the class completing a handout for points using their books and notebooks. They also worked on completing speed calculations in their notebooks for points. Students that did not complete the assignment should have it completed for next Thursday. This is NOT homework for the weekend. 

4th Grade Science Class 9/5/19

This afternoon, we began with the question of the day to review how energy is classified. We began discussing energy of motion. We read page 31 and completed recorded the definition in the notebook. Then, after watching a video clip, we answered the question on page 31 together.
 
For any object, a higher speed means a higher kinetic energy. 
 
After completing our explanation of types of energy, we moved to pages 32 and 33. Here, we worked together to explain the energy at different parts of the roller coaster.
 
1. The cars gain potential energy as they are pulled to the top of the first hill. 
2. As the cars go down the hill, the potential energy decreases. The kinetic energy increases as the cars gain speed. 
3. At the end of the ride, the cars are moving slowly; they have little kinetic energy and potential energy as they come to a stop. 
4. They give the cars more energy by making hills, especially the first hill, taller or steeper. This makes them go faster. 
 
Finally, to end the class, we completed the foldable on page 33 that shows the kid sledding. The picture on the left: The child at the top of the hill has stored energy. The picture on the right: The stored energy changes into energy of motion as the child moves down the hill. 
 
At the bottom of the page, students should have answered the question: How would the child increase its speed? We will discuss this tomorrow. 

4th Grade Science Class 8/30/19

This morning, we completed the investigation questions from yesterday on page 28. 
 
7. The stack of three books had the fastest time. I noticed that the more books I used, the less time it took for the ball to reach the bottom. 
8. A lower travel time indicates a faster speed. 
9. No, my results did not support my prediction because I thought that the ramp would be curved. 

Yes, my results support my prediction because the ball moved faster down the highest ramp. 

(depends on the students for number 9)

10. The ball moved fastest when the ramp was highest because it had the most energy.

After completing the investigation questions, we made a claim and provided evidence for the claim on page 29. 

Claim: Increasing the height of the ramp gave the ball more energy. 

Evidence: The data showed that as the number of books increased, the travel time of the ball decreased, so its speed increased. 

Finally, we read about energy and motion on page 30 and took notes on this page. We answered the question about potential energy.

1. The potential energy, or stored energy, of an object increases when it is raised higher. 

*I checked the science fair introductions and research. Assignments that were not turned in today will have a deduction. 

4th Grade Science Exam 1 Review

We will be answering the exam review on Tuesday, September 3rd. Students are welcome to work on this as soon as they would like. They are also welcome to bring a print out of the review to class and then simply answer the questions. Exam 1 will be taken on Tuesday, September 10th.