Heart rate | Science technology

This weeks tech topic was about finding out what activities can cause high blood pressure and low blood pressures. We conducted this experiment by using a watch that can track heart rates, and doing different activities. We then recorded our answers on a table. We finally had to record the steps we took to complete this activity. We also watched an informational video and noted down what we thought was important from the video. 

I enjoyed these activities because we got to do physical activities.

Science: Topic 8 | Acids and Bases | Tech

 LI: To learn about the pH scale.

For science tech this week we were learning about how to measure how acidic or how basic something is. We tipped different substances into a dish and tested how acidic or basic the substance was. To test this we used litmus paper which is colored red and blue. Depending on what color the litmus paper turned represented the acidity or basicity of the substance.

I enjoyed this activity because it was very easy to learn about how acidic and basic something was.

Osmosis & Transpiration / Science tech

 LI: To understand more about osmosis and transpiration.

During this lesson we learned more about transpiration, stomata, phlaoem, xylem, and photosynthesis. Transpiration is the effect of sunlight evaporating water. Stomata are the tiny pores found on leaves that absorb water. Phaloem are the small cells that help the plant distribute food in different parts of the plant. Finally, the xylem helps move the water from the bottom of the plant (near the roots) upwards defying gravity and bringing the water to the top of the plant. Photosynthesis is when a plant converts sunlight, water, and carbon dioxide into sugar, glucose or oxygen. More about the topic can be found in the document below.

I enjoyed this activity because I got to understand more about the specific parts of photosynthesis.

Dissection A Hibiscus

 LI: To learn the parts of the flower and what their functions are.

First we learned about the different parts of the flower and what their functions are. We then had to learn the proper way to dissect a flower. After we were informed about how to dissect a flower, we had to carry on with the procedure. We then had to take out a single pollen and put it on a slide. We then had to put the slide into the microscope to look at the pollen closely.

I enjoyed this activity as it was soothing and informative.

Buoyancy

 LI: To test the buoyancy of different objects.

This week in Science Tech we experimented with the different buoyancys that different objects have. The objects that we were experimenting with were Tennis balls, Large and Small marbles, a table tennis ball, and a golf ball. We also experimented with some different shaped blocks, that also composed of different materials.

When things float the term to use is 'That object is positivley buoyant' and when an object sinks then the term to use is 'That object is negativley buoyant'. Water rises when the weight of the object in the water is greater than the amount of weight that the water displaces. Mass is the same as how 

I enjoyed this task because it was very intereging seeing if the object would float or sink.