• Explain the differences between a virus and a bacteria in how they affect the body. (microorganisms).

• Research “good” and “bad” bacteria. Write a story of types of helpful bacteria in humans and plants and harmful bacteria in humans and plants.

Instruction:

• Read StemScopedia Section C.10AB - Aqueous Solutions & StemScopedia Section C.10EF - Factors that Affect Solubility- Take notes and answer the questions as you read. When you have finished, write a summary of what you learned.

Activities:

• Video - Watch the following videos: What Happens When Stuff Dissolves & Electrolytes and Non-Electrolytes. Take notes as you watch the videos.

• Choose ONE of the following activities:

  • On a sheet of paper, define the terms electrolyte and non-electrolyte. On the same page, create a drawing that illustrates the term electrolyte and a second drawing that illustrates the term non-electrolyte.

  • Describe how you would test a solution to find out whether it is an electrolyte or a nonelectrolyte. Include the lab equipment you would need, the procedures you would follow, and the data you would record in the experiment.

Review:

• Complete the Quizizz assignment found here using the join code provided by your teacher.

Using everyday objects:

• explore various types of waves and their characteristics and behaviors.

• Create a graphic organizer, such as a layered book, to illustrate and describe the characteristics and behaviors for the examples

Describe and predict image formation as a consequence of reflection from a plane mirror and refraction through a thin convex lens.

Directions for Instruction:

• Using the physics classroom read through lesson 5 and 6 of image formation using lenses and lesson 2 about color. Take notes as you read.

• https://www.physicsclassroom.com/class/refrn

• https://www.physicsclassroom.com/class/light

Activities:

• Choose one or two of the following activities to explore image formation and the sensation of sight. Write a summary of your experience building and testing one of these activities and include a picture of your experimental set-up.

  • https://www.exploratorium.edu/snacks/bird-in-cage

  • https://www.exploratorium.edu/snacks/afterimage

  • https://www.exploratorium.edu/snacks/hole-in-your-hand

  • https://www.exploratorium.edu/snacks/personal-pinhole-theater

Do Now: HIV/AIDS Quiz

1. What is HIV?
   a. A virus
   b. A bacterium
   c. A fungus
   d. A protozoa

2. What is the difference between HIV and AIDS?
   a. HIV is a virus and AIDS is a bacterial disease
   b. HIV is the virus that causes AIDS
   c. There is no difference between HIV and AIDS

3. Is there a cure for AIDS?
   a. Yes
   b. No
   c. Only available on prescription

4. Does HIV only affect gay people?
   a. Yes
   b. No
   c. Only gay men
   d. Only gay women

5. Can you get AIDS from sharing a drink with someone who has HIV?
   a. Yes
   b. No
   c. Only if you don't wash the cup

6. Can insects transmit HIV?
   a. Yes
   b. No
   c. Only mosquitoes

7. How can you tell if somebody has HIV or AIDS?
   a. Because of the way they act
   b. They look tired and ill
   c. There is no easy way to tell

8. What does HIV stand for?
   a. Human Immunodeficiency Virus
   b. Harmful Intravenous Vaccine
   c. Helicobacter Intravenous Virus

9. How does HIV affect the immune system?
   a. It infects T-cells
   b. It kills somatic cells
   c. It destroys neurons

10. Which practice puts you most at risk of becoming infected with HIV?
    a. Using the same toilet as an infected person
    b. Unprotected vaginal sex
    c. Anal sex with a condom
    d. All of the above

Person A: Origination and Transmission of HIV

In the 20th century, there were two unexpected outbreaks of virally-caused disease. The catastrophic potential of this new virally-caused disease may still not have been fully understood. After extensive research, HIV is known to have originated from chimpanzees. Transmission from chimps to humans probably occurred while animals were butchered for food in sub-Saharan Africa, with animal blood contaminating wounds of humans. Others speculate transmission occurred through sexual contact between chimps and humans. The transmission likely passed unnoticed for a long period of time, but in the last half of the 20th century, accompanied social upheavals led to the outbreak. Increased sexual freedoms, coupled with increased global travel, facilitated the spread of HIV into developed countries.

You can get or transmit HIV only through specific activities. Most commonly, people get or transmit HIV through sexual behaviors and needle or syringe use. HIV is not spread easily otherwise. Certain body fluids from a person who has HIV can transmit HIV. These body fluids include: blood, semen, pre-seminal fluid (pre-cum), rectal fluids, vaginal fluids, and breast milk. These body fluids must come into contact with a mucous membrane or damaged tissue or be directly injected into your bloodstream (by a needle or syringe) for transmission to occur. Mucous membranes are found inside the rectum, vagina, penis, and mouth. Anal sex is the highest-risk sexual behavior, while vaginal sex is the second highest-risk sexual behavior. Transmission can occur when sharing needles or syringes, rinse water, or other equipment used to prepare injection drugs with someone who has HIV. HIV may be spread from mother to child during pregnancy, birth, or breastfeeding. In the past, transmission could occur from receiving blood transfusions, blood products, or organ/tissue transplants that are contaminated with HIV.

Summary: How did HIV originate? How is it transmitted? How is not transmitted?

Earth Week

Pick some of the following activities to try during Earth week

• Create an art piece from recycled materials or natural materials and send a picture to a friend.

• Download Inaturalist App and identify 5 species in your yard.

• Watch a nature documentary or ted talk and write a summary

• Pick up litter in your area

• Plant some vegetation

• Start a compost pile