Speeding past the school

 Aim: 

See how many cars are speeding past school

Method:  1-measure distance ... power pole ---> power pole= 50m

               2- Time how long it takes a car to travel this distance.

   -"flag" person indicate when a car passes their pole

   -"Timer" person starts when the flag person raises the flag and stops it when the car passes the pole.

   -" Writer" person writes down the time.

3-collect 10 times

4-calculate speed in m/s and then convert to km/hr

Speed	Car 1	Car 2	Car 3	Car 4	Car 5	Car 6	Car 7	Car 8	Car 9	Car 10	Average
Time (s)	2.55	2.89	2.39	3.12	2.15	2.74	2.85	2.89	3.38	3.39	2.83
m s-1	19.6	17.3	20.9	16	23.3	18.2	17.5	17.3	14.8	14.7	17.7
km hr-1	70.6	62.3	75.2	57.6	83.8	65.5	63	62.2	53.2	52.9	63

5-Are there any speeders?

yes

Conclusion:

In conclusion, the principal's hypothesis was correct(that the cars were going fast and over the speed limit) The Average speed was 63km per hour which the speed limit is 50km. We even noticed a car that was going 83.8km per hour.

6- What was the average speed of the cars you measured?

63km per hour

7- Should the principal be worried about speeding on this road?

yes

Making salts

  

Aim:

To produce copper sulfate salt by reacting copper oxide with an acid.

Equipment:

• Copper oxide powder
• dilute 
• sulfuric acid
• 50mL measuring cylinder
• two 100 mL beakers
• Bunsen burner
• tripod
• gauze mat
• funnel
• filter paper

Method:

1. Add 20 mL of sulfuric acid to a 100mL beaker. Heat the acid until it reaches 70 C Turn off your bunsen burner.
2. Once heated, use a spatula to add pea-sized portions of copper oxide to the beaker.
3. Repeat step 2 until no more will dissolve.
4. Fold the filter paper and place it in the funnel.
5. Make sure the beaker is cool enough to hold at the top.
6. Gently swirl the contents of the beaker to mix, and then pour into the filter paper in the funnel. Allow the filter through.

Observation:

We did this experiment and then we saw the boiling sulfuric acid turned to green.

Speed of Light

 

Speed of light

Aim: 

To investigate how light behaves when it hits a plane(flat).

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.

Result:

Angle of incidence	Angle of reflection
0°	0°
10°	10°
20°	20°
30°	30°
40°	40°
50°	50°
60°	60°
70°	70°
80°	80°

Light experiment

 

Aim:

To investigate shadows using transparent, translucent and opaque materials.

Hypothesis:

it would go through in the some of the objects like plastic, glass and etc.

Equipment:

• Dish 
• power pack 
• lightbox 
• baker

Method: 

1. turn on the power 
2. turn on the light 
3. put the object in front of the light.

Burns and burner

Energy

Energy



Definition: 

 Stored in an object,The ability to move something.

Different kind of Energy  

Light Energy 
The energy of the electronomietic waves, found in microwaves, X-rays, and visible light.

examples: Lampes, flashlights

Heat energy 
Cause by the movement of particles. found in all hot objects.

examples: Air-conditions, sun

Sound energy
Energy produces by vibrating objects. Examples are speech, ultrasound and music.

examples: loudspeakers, phones

Compounds potential Energy 
Energy stored in the bonds between particles. found in substance like petrol and food.

examples: batteries, cars

Electrical Energy 
The movement of electrically charged particles. found in wires, generators and lighting.

examples: batteries, lightning

Gravitation and potential energy 
Energy stored in objects due to their height above the ground

examples: rock, asteroid

Kinetic energy 
Energy due to the motion of objects. Eg. moving cars, running, swimming

examples: moving cars, walking

Elastic potential energy 
Energy stored in stretched or squashed objects. Examples are springs and rubber band.

examples: The coil spring of a wind-up clock. An archer's stretched bow.

Science Introduction

The topics we will be covering in science are:

1. Energy Types 
2. Energy Transformation 
3. Waves
4. Sound
5. Light 
6. The eye 
7. Reflection and Reflection of light 
8. Electricity 
9. Circuits 
10. Magnetism 

All experiments will use the scientific method. The heading that are used for this will be:

• Aim 
• Hypothesis 
• Equipment 
• Method 
• Finding 
• Conclusion 

Distillation

                         Separating a mixture suing distillation  


Aim: To separate a solute from a solvent in a solution using distillation.

Hypothesis:

I think its gonna evaporate and I think there would be no sugar.


Equipment:

• A solution of saltwater 
• Conical flask 
• heatproof mat
• a delivery tube and bung 
• Bunsen 
• Burner 
• tripod 
• gauze mat 
• retort stand 
• boss head and clamp 
• boiling tube 

Method: 

1. Set up the equipment as shown in the diagram.

1.  Add approximately 50 mL of saltwater to your conical flask.

1.  Light your Bunsen burner. Open the air hole and gently push the Bunsen burner under the tripod.

1.  heat the solution until most of the solvent has been evaporated. Turn off your Busen burner.

Result: The coke was boiling because the heat was under the beaker and the water of the coke was evaporating from sugar and left the sugar behind.

Discussion:  first we put the coke on the heat and then when the coke started boiling and then it made bubbles and then the coke started evaporating and the liquid in the boiling tube was so clear and that called condense.


Conclusion: I was wrong because the water turned to gas and the sugar left behind.

Dilution Experiment

HELLO, Today I will share what we did  in science class if u like it leave a comment down below

                   Dilution Experiment

Aim: 

To make a dilution series to investigate concentration.

Equipment:

• Six test tube 
• Potassium
• tweezers 
• plastic transfer pipette 
•  test tube rack 
• 10 ml cylinder 

Method: 

Conclusion:


The first one had the most potassium crystal and least water so the first on was concentrated but the last one had the least potassium crystal and had the most water so the last was most dilute.

Evaporation Experiment

HELLOOO, We have been learning about Evaporation, Dilution, Filtration, Solubility, last week we
did an experiment about dilution, and this week we will do an experiment about Evaporation.


                                        Evaporation 

Aim: To evaporate, copper, sulfate( blue liquid to form a solute.


Equipment:

• copper sulfate solution
• 250 mL Beaker
• heatproof mat
• evaporation basin
• element

Method:

1. Set up element
2. Add 100mL of hot water to the beaker and place it on the element.
3. Add copper sulfate to the evaporating basin until it is quarter full.
4. Carefully, place the evaporating basin on top of the beaker. 
5. Turn on the element to 3
6. Heat the solution until most of the solvent has been evaporated and crystals of solute are forming. 
7. Turn off the element- careful not to touch as it will be hot for a long time.

Observations: There was a bubble on the water it was because the water was boiling

Discussion: Because when the liquid got heat up the bubbles were going up in the water and boiling.

Evaluation: As we can see the water is boiling and the liquid getting hit up and its turning to liquid to a gas.