Observing Transpiration and Capillary Action

Aim: To observe xylem tissue and prove that they transport water up the plant

Equipment: One stick of celery with leaves still attached, a retort stand, boss head and clamp, a petri dish, water, food colouring, a knife or scalpel.

Method: 1. Make a cut across the base of the celery stalk to expose a new section of the stem.

2. Fill the petri dish with water and add a few drops of food colouring.

3. Place the celery stalk in the petri dish and gently clamp it in place using the retort stand, boss head and clamp.

4. Leave the stalk undisturbed for 24 hours.

5. Remove the stalk from the clamp and petri dish. Cut the stem about 1/3 of the way up the stem.

Reflection through lenses

Investigating Refraction Through Lenses 

Aim: To investigate how different types of lenses refract light.

Equipment: Triple-slit ray slide, power supply, a concave lens and a convex lens.

Method:

1. Set up a ray box, triple-slit ray slide, and power supply, a concave lens and a convex lens. 

2. Place the convex lens in the space below. Place the ray box at the top of the page and shine the three rays of light at the lens. Make sure the central light ray hits the lens at 90 as indicated in the diagram. 

3. Carefully trace the direction of the incoming and refracted rays.

4. Repeat using the concave lens

 Concave lens

  convex  lens 

Refraction

Aim: To investigate how light is affected by changing the substance it is travelling through

Equipment: Ray box, power source, glass or perspex block, single-slit ray slide. 

Method: Collect the equipment from your teacher, and set them up to produce a single beam of light.

Observing Reflection in Curved Mirrors

Aim: To investigate the reflection of the light rays in concave and convex mirrors.

Equipment: Ray Box, Triple-slit ray slide and power supply.

Method: 

1. set up your ray box, triple-slit ray slide and power supply.
2. Place the mirrors on  your book as indicated below. Place the ray box at the top  of the page and shine the 3 rays of light at the mirror. 
3. Ensure that the middle ray light is hitting the mirror at a 90° angle.
4. Carefully trace the direction of three incident rays and the three reflected rays. 

Bouncing Light

Aim: To investigate how light behaves when it hits a plane (flat) mirror

 Method:

1. Collect a ray box, power supply and single-slit ray slide from your teacher, and set them up to  produce a single beam of light.
2. Place a plane mirror on the diagram of the protractor as described below.
3. Vary the angle of incidence and record the angle of reflection in the results table.    

Findings: The angle of incidence is the same as the angle of reflection.

 

Dilution series

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Filter water

We are working on trying to filter dirty water. (insert photo)

The goal is to filter the water clean enough so I can drink it.
I am doing it so I can survive in the wilderness.

We used 

>1  Natashna (Natasha) 

>1 Grampa Boots (Me)

>1 Dora (Jordan)

> bottle

> paper towels

> 2 cups

> string

> cotton balls
> scraps of material

How did they change? They soaked up the good juicy dirt.

How well did your design work out?????????????????????????????? It worked brilliantly because we made it. 

What went well? Mostly everything apart from the mess I made.
What didn't go well? The mess.
What items were helpful? The paper towels and balls.