Wednesday, June 7, 2017

The Stony Lab

The Stony Lab question

7.Calculate the density of each of your mineral samples. How could you use the densities to identify the minerals?Ans.Density can be measured with the structure of the minerals. Different minerals will have different density.

8.Would density or color be more useful in identifying a particular mineral? Explain your answer.
Ans.Color because we can identify the mineral by our eye.

Friday, May 26, 2017

Acid rain

Effect of acid rain on plants and trees is Dead or dying trees are a common sight in areas affected by acid rain. Acid rain leaches aluminum from the soil. That aluminum may be harmful to plants as well as animals. Acid rain also removes minerals and nutrients from the soil that trees need to grow. The trees are then less able to absorb sunlight, which makes them weak and less able to withstand freezing temperatures.

Thursday, February 2, 2017

The effect of gravity on speed

-put the ramp against the seat of a chair.Place the ramp and chair so that the ramp points towards the hallway.Have your teammate on the other endd of the hallway.
-place the ball bearing at the top of the ramp.
-lift the ramp 20 cm and release the ball bearing
-time how long it takes to travel 5 metres
-see how far it will go
-repeat the experiment three times for each height then do 40 cm, 60 cm and 80 cm

HEIGHT                                         TIME TO TRAVEL                       DISTANCE TRAVELLED
    20                                                      4.72 sec                                                5 m. 90 cm.
    40                                                      8.78 sec                                                5 m. 60 cm.



Wednesday, November 16, 2016


Causes of Acid Rain
    The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids.These then mix with water and other materials before falling to the ground.

Effect of Acid Rain
  • Burning of fossil fuels to generate electricity.
  • Vehicles and heavy equipment.
  • Manufacturing, oil refineries and other industries.
Cure of Acid Rain
    Use of alternative sources of energy, decreasing energy consumption and using alternative forms of transport. Acid rain results from the deposition of nitrogen oxides and sulfur dioxide in the atmosphere, which occurs when fossil fuels are burned.

Thursday, September 1, 2016





The producer is grass.The ant eat grass the ant is consumer.The birds eat ant the birds is consumer 2. And it will be like this when it on the food chain.

Thursday, August 25, 2016


Symbiosis: This comes from a Greek word simply meaning 'living together' and can be used to describe any association between two organisms.

Mutualism: This can be used to describe an association in which both organisms apparently benefit

Example: relationship between bullhorn acacia trees and certain species of ants.

Parasitism In this association one organism benefits, and the other is adversely affected. This description would also fit the relationship between a carnivore and its live prey and a herbivore and the plant it feeds on, especially if they are very specialized in the food they eat. 

Example:Fleas and mosquitoes feed on blood from other organisms.

Commensalism is a type of relationship where one of the organisms benefits greatly from the symbiosis. The other is not helped but is not harmed or damaged from the relationship. In other words, this is a one-sided symbiotic relationship.
Example: the relationship between cattle egrets and cattle.