My mini science investigation - Tech

 

Carefully read and understand this recording and planning guide so you are systematic in scientific thinking, experimenting, recording and interpreting. 

Follow logically through each section so you are thorough in your science investigation steps. 

6

Complete each section with details needed so you have carefully logged your project...and so an outsider can know and understand too.

1	My science investigation TOPIC:  Pulse Rates
2	My investigation question Investigate the effect of different types of physical activity on the heart rate/pulse rate. Which actions/activity resulted in the highest heart rate? Which actions/activity resulted in the lowest heart rate? Why do you think this might be? Hypothesis:  1, I think running as fast as possible on the spot will give me the highest heart rate. 2, I think stretching will have the lowest heart rate.
3	Background research and knowledge I will explore as a backdrop to my investigation High Blood Pressure - 120 and above mmHg Low Blood Pressure - 80 and below mmHg
4	Aim of my investigation To find the highest and lowest heart rate while doing activity
5	My investigation steps Materials: Stop watch, smart watch, tennis ball (for catch) People: My partner Angelica STEP 1 Put on the watch tightly STEP 2 Wait for your watch to go down to your heart rate STEP 3 Do the activity while using a stopwatch (30 sec) and read the heart rate STEP 4 Write it into the Collection table STEP 5 Repeat
6	My possible recording method Data collection table:  Name of the Activity Length of Activity Beat counted in 30 seconds Heart Rate mmHg Sitting 30 seconds 97 97 mmHg Jogging on Spot 30 seconds 160/88 160/88 mmHg Throwing and Catching ball 30 seconds 118/91 118/91 mmHg Stretching 30 seconds 95/90 95/90 mmHg Star Jumps 30 seconds 138/100 138/100 mmHg Running as fast as possible on spot 30 seconds 150/120 150/120 mmHg     Photos:
7	Result:  Which actions/activity resulted in the highest heart rate? Jogging on Spot - Hypothesis - Running Which actions/activity resulted in the lowest heart rate? Stretching - Hypothesis - Stretching  Why do you think this might be? High heart rate: While tuning your heart needs more oxygen Low heart rate: Stretching makes your heart rate faster, but goes down afterwards because it is relaxing for the nervous system.

Topic 7 - Acids and Bases

 Topic 7 - Acids and Bases 29/07/21

Task 1 pH Questions: What is pH? Potential of Hydrogen How do you measure pH? pH Paper What is the scale pH is measured on? Acid/basic water is What pH level does water have? Neutral What is the most acidic pH level?0 What is the most basic pH level?14

0-6 acidic/becoming weaker 7 neutral 8-14 basic/becoming stronger All liquids acids or basics More Hydrogen ions = Acidic  More Hydroxide ions = Bases Dissolve in water lose 1 electron and become acid

Substance	Acid/Base Prediction	Colour changes from? Litmus	Result
Dishwashing liquid	base	Blue to blue	Neutral
Orange juice	Acid	Blue to red	acid
Toilet Cleaner	Base	Blue to red	acid
Window cleaner	acid	Blue to blue	base
Milk	base	Red to red	base
Lemon Juice	acid	Blue to red Red no change	acid
tea	base	Blue to red	acid
vinegar	acid	Blue to blue	acid
Distill water	base	Blue to red	base
Apple juice	base	Blue to red	base
water	Neutral	Blue to blue red to red	neutral

Topic 6 Science - Bubbles

 Topic 6 - Bubbles

Task 1 Science in Bubbles: Liquid soap water/ Wand Blow steady stream air Layers of air layer of water between two layers of soap Surround the air and keep it inside Air helps float Particle in water makes no bubbles  Soap helps spread out All same shape round water layer pull on air inside give bubble round shape

-Task 2- Tricks Caterpillar - make 1 bubble and make smaller bubbles on bottom Carousel - Make 2 medium sized bubble, small bubbles where bigger bubbles meet Cube Shape - 2 Medium sized bubble, 4 seet about same size, straw in middle and blow to make cube in middle Wands Pipe Cleaner - Medium - 4 Pipe Cleaners Bubble Liquid Equipment: A set of scales 250ml beaker Calibrated syringe Stirring rod Ingredients: Table sugar Glycerol Kitchen detergent Water Method: 125ml water in beaker Weigh 5 grams of sugar and mix until dissolved Add 3mls of glycerol  Add 10mls of dish wash  Bubbles: (This isn't the experiment, just some fun things with the bubbles :) )

Topic 5 - Flower Power - Science

 Topic 5 - Flower Power

What are we doing: Know the parts of the flower and what they do and why. Be able to dissect a flower, arrange its parts and collate on an information sheet. Complete a scientific diagram of a flower. Be able to speak about the above.

Your thoughts on flower: I like them, but sometimes they bring too many bugs. They are pretty and smell nice, but drop their petals everywhere. What you have noticed about flowers: They attract a lot of different bugs, but not just bees. What you know: Flowers provide lots of pollen.

Parts of the flower: Stigma-Male part of flower Style-long tube Anther-Holds pollen male cell Pollen tube Sepal-Green part on the bottom Thalamus-where you hold the flower Male Gametophyte Petal Ovule-Female part of flower Female Gametophyte

Dissecting Hibiscus  Flower Cutting Board Cutting tool/knife   Instructions: Remove 1 petal Remove sepals Pinch sides bottom Cut down center of line Then pull out the pollen tube