Science

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

Equipment: One stick celery with the leaves still attache, a retort sand, 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 resort 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.

Music 2018

Music 2018

Refraction

Investigating Refraction - Bending Light
Aim: To investigate how light is affected by changing the substance it is travelling through.
Method: Collect the equipment from your teacher, and set them up to produce a single beam of light.

Science

INVESTIGATING REFRACTION THROUGH LENSES

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

Method:
1. Set up ray box, triple-slit ray slide and power supply.
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 degrees at indicated in the diagram.
3. Carefully trace the direction of the                 incoming and refracted rays.
4. Repeat using the concave lens.

Observing Reflection in Curved Mirrors

Concave Mirrors:
Concave mirrors have the shiny surface on the inside of the curve. When looking at a tablespoon, the bowl of the spoon is concave.

Convex Mirrors:
Convex mirrors have the shiny surface on the outside of the curve. When looking at a tablespoon, the back of the spoon is convex.


Aim: To investigate the reflection of light rays in concave and convex mirrors.
Method: 1. Set up 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 of light is hitting the mirror at a 90 degree angle.
4. Carefully trace the direction of the three incident rays and the three reflected rays.