8th Grade Science Assignments
- Instructors
- Term
- 2016-2017
- Department
- 8th Grade
- Description
-
This course encompasses all aspects of physical science for middle school. The course emphasizes the problem-solving methods of science, and provides opportunities for students to practice using these methods in a variety of laboratory experiences, activities, projects, and demonstrations. Topics of study covered in this course include:
- Speed, velocity, force and Newton's laws of motion
- Atomic properties of periods and groups in the periodic table
- Molecules, compounds, phase changes and states of matter
- Characteristics of objects in the solar system
- Chemical composition of living organisms
- Mathematical formulas for calculating experiment variables
- Strategies for designing experiments and analyzing data
Our physical science chapters will be complement with a series of short video lessons that make it easy to process each topic's main ideas and terminology. There are also corresponding transcripts with links to supplementary text lessons as well as multiple-choice quizzes students can use to determine what topics, if any, will require extra study.
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- Has technology made the world smaller or bigger?
- Does the internet need stricter controls and censorship?
- What will technology do to the way we live in twenty-five years?
- Can genetically altered food sources be used to solve the world’s hunger problem?
- What defines death?
- Is using animal matter in human transplants ethical?
- Should people with health hazards such as smoking or obesity pay higher health care costs?
- Should human cloning be allowed?
- What role does religion play in the use of reproductive technologies?
- Is stem cell research a good or bad idea?
- What has social media and texting done to how we communicate?
- Has texting made this generation rude?
- How does memory work?
- Why are diseases, once believed to be eradicated, making a return?
- Why are diseases, once believed to be eradicated, making a return?How important are space exploration and research?How important are space exploration and research?
- Why are diseases, once believed to be eradicated, making a return?How important are space exploration and research?What do we really know about our universe?
- Why are diseases, once believed to be eradicated, making a return?How important are space exploration and research?How smart should our computers get?
- What effect will robotics have on us in twenty years?
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1. ______ is a unit of speed:
a. m/s
b. s
c. kg
d. hr
2. The speed at any instant of time is known as
a. average speed
b. velocity
c. given speed
d. instantaneous speed
3. If a total distance of 750 m is covered in a time interval of 25 s,the average speed is ______?
a. 3, 974 mph
b. 3 mph
c. 30 mph
d. 30 m/s
4. ______________ describes how fast something is going, whereas, __________ describes how fast something is going and in a certain direction.
a. speed, velocity
b. rate, speed
c. rate, velocity
d. speed, acceleration
5. Which of the following is a measure of velocity?
a. 30 s
b. 30 South
c. 30 m/s
d. 30 m/s, South
6. If a person walked at 2 m/s for 12 s he/she would travel a distance of ________.
a. 24 m
b. 6 m
c. 4 m
d. none of the answers
7. How long would it take to travel 50 km traveling at a speed of 10 km/hr?
a. 3 hours
b. 1 hour
c. 5 hours
d. 50 hours
8. The ______ of a distance versus time graph is speed.
a. slope
b. y-intercept
c. origin
d. none of the answers
9. The SI unit for speed is the ________.
a. in./hour
b. m/s
c. cm/min.
d. none of the answers
10. How far would you travel moving at 12 m/s for 3.00 minutes?
a. 36.0 m
b. 2160 m
c. 40.0 m
d. 36.0 miles
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1. Transition Metals vs. Main Group Elements: Properties and Differences
2. Classifying Substances by Their Physical Properties
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The Diagonal Relationship, Metallic Character, and Boiling Point
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1. Ionization Energy: Trends Among Groups and Periods of the Periodic Table
2. Electronegativity: Trends Among Groups and Periods of the Periodic Table
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1. Valence Electrons and Energy Levels of Atoms of Elements
2. Atomic and Ionic Radii: Trends Among Groups and Periods of the Periodic Table
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The chemical formula for hydrogen peroxide is H2O2. Hydrogen peroxide is not a very stable compound, so, it is always decomposing to water and oxygen, but under normal conditions, the decomposition goes very slowly. In this chemical reaction, yeast catalyzes the decomposition, making the reaction go much more quickly. If you add a little dishwashing detergent, you get foam! If you add food coloring, you get colored foam!
- An empty 20 oz soda bottle (or any tall skinny clear container)
- Hydrogen peroxide (you can get 3% at the grocery store, or 8% at a beauty supply store)
- Active yeast
- Warm water
- Liquid dish soap
- Food coloring - optional - but it does make a nice color!
- Mix ~4 oz of hydrogen peroxide with ~2oz of liquid dish soap and a few drops of food coloring. Add this mixture to the soda bottle and place it in the sink.
- In a separate container, mix one packet of active yeast with warm water, still and let sit for ~ 5 minutes.
- When you are ready, pour the yeast mixture into the soda bottle (a funnel might be helpful) and watch the reaction!
- How much foam is produced, and how quickly?
- Does it matter if you use lukewarm water to activate the yeast or cold water?
- What happens if you add more or less soap?
- What happens if you don't add any soap?
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Part 1-Videos
Directions- Watch the videos on the following topics, in the order that I have them listed, and answer a couple questions about each video.
URL Link- http://www.neok12.com/Simple-Machines.htm
Video Titles
What is Work
- Is the weight lifter doing the same amount of work when he lifts the 1200N barbell 1m as when he lifts the same barbell 2m? ________ Explain.
- What is work in physics?
- What is a joule?
Mechanical Advantage and Friction
- How do machines make work easier?
- How do you find mechanical advantage of a lever?
- What causes the mechanical advantage of the inclined plane to be less than that of the lever?
Inclined Plane
- Explain how an inclined plane does work?
- How do you find the mechanical advantage of an inclined plane?
Lever
- Explain how a lever does work?
- What are the three types of levers? Give examples of each?
Screw and Wheel
- Explain how a screw does work?
- Explain how a wheel & axel does work?
- How do you find the mechanical advantage of a screw and wheel & axel?
- Screw-
- Wheel and Axel-
Pulley
- Explain how a pulley does work?
- What are the three type of pulleys?
- How does each type of pulley make work easier?
Part 2-Simple Machine Games
URL- http://www.msichicago.org/fileadmin/Activities/Games/simple_machines/
Directions- Now try out some of the simple machines? Play the game and try two different choices for each machine and write your qualitative observations in the space below. Focus your answers on how much force is needed to do work for each of your choices. Write your choice of machine in the blank space provided.
Inclined Plane
First Inclined Plane________________-
Second Inclined Plane______________-
Lever
First Lever (Fulcrum Placement)______________-
Second Lever(Fulcrum Placement) ______________-
Wheel and Axle
First Wheel and Axel______________-
Second Wheel and Axel______________-
Pulley
First Pulley______________
Second Pulley______________
Part 3-Rube Goldberg Machine
http://pbskids.org/zoom/games/goldburgertogo/
Directions- Describe how this Rube Goldberg Machine works?
- What simple machines do you see in this Rube Goldberg Machine? List 4 specific examples and what kind they are. Example – Scissors are a wedge.
- How does this Rube Goldberg Machine Work?
Part 4- Simple Machine Games
Directions- Play the games and record your scores.
URL- http://mint.ua.edu/games/simple-machines/
- What is your total score the first time?________________________
- What is your total score the second time?______________________
- What did you struggle with?
URL- http://www.quia.com/cm/42409.html?AP_rand=1249946342
- What is your total score the first time?______________________
- What is your total score the second time?____________________
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- pool noodles (2-3 per student)
- packaging tape