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Friday, May 17, 2019

Science: Finger prints

Image result for forensicsForensic Science

Definition:



5 Forensic Science topics;

  1.  D.N.A
  2.  Finger prints
  3. Money
  4.  White powder
  5. Fibres

    
Finger prints

Aim: To look at the different types of fingerprints.

Materials: 

  1. Balloon
  2. Ink pad
  3. Finger
Steps

  1. Keep balloon deflated  
  2. Roll your thumb on ink pad softly  
  3. Put your fingerF on the balloon  
  4.  Blow the balloon  
  5.  Use your index finger same steps


Image result for fingerprint types

Insert two pictures here of your fingerprints

Ink prints





Thumb print
Index finger print








Record the types of fingerprints from those in your group.

Name
Fingerprint 1 (Thumb)
Fingerprint 2 (index finger)
Daniwhorlwhorl
Ranitwhorlwhorl






Dusting fingerprints:

Lifting fingerprints

Aim: To learn how to lift hidden fingerprints from an object.

1. Lifting and Gathering fingerprints.

Equipment:
  1.   
  2.   
  3.   
  4.   
  5.   
  6.  
Method: 

  1.   
  2.   
  3.  
  4.  


Results:

Lifted fingerprints


Thumb print
Index finger print







Conclusion :

Tuesday, May 14, 2019

Crystal

Aim: To learn about a saturated solution and how to make crystals
Definition of solution
A liquid mixture, when something is dissolved into a liquid (eg: sugar in water) 

Definition of saturated
Having or holding as much as can be absorbed of something (when no more sugar or borax can be dissolved into the water)


In groups of three you will make three different types of crystals and compare the results.


Image result for borax crystals

Ratio; 3 Tablespoons Borax per 1/2 cup water

Materials

1) Borax
2) water
3) cups
4)stick/Popsicle stick.

Process

Step 1: grab the cup                                        
Step 2: fill cup with water
Step 3:put borax in it
Step 4: mix it around
Step 5: put a stick with a star on top
Step 6: sit and wait takes week

Sugar Crystals

Grow your own Sugar Crystals

Ratio: 1 cup sugar to 1/2 cup water

Materials

1)sugar
2)water
3)cups
4)sticks/Popsicle.

Process

Step 1: grab the cup
Step 2:fill cup with water
Step 3:put sugar in it
Step 4: mix it with stick
Step 5: put a stick with a star on top
Step 6: wait takes week it think



Image result for how to make salt crystals

Ratio: 4 Tablespoons salt to 1/2 cup water

Materials

1) salt
2) cup 
3)sticks/Popsicle.
4)water


Process

grab the cup
Step 2:fill cup with water
Step 3:put salt in it
Step 4: mix it with stick
Step 5: put a stick with a star on top


Step 6: wait takes week it think


Findings

Describe your crystals in the table below.



Crystal Type
Shape
(Describe the shape)
Size
(of individual crystals)
Hardness
(Crumbly to Rock Hard)
Borax



circle10cmit is very hard
Sugar



square2msoft
Salt



square10 m below hard

What crystals worked out best and why?:

Conclusion:

________________________________________________________________________









Type
Explanation
Salt
Image result for salt crystal


salt is formed from the sea and sand when hitting shore. the sea gets salte from rain coming down and the fish live in salt water that helps them live.
Sugar
Image result for sugarcrystal



sugar is formed from sugar cane it goes through a machine the processes begins the sugar forms it self in to cubes that is what they call sugar cubes.
Snowflakes
Image result for snowflake crystal

snow flakes are formed when it is cold and snowy there are things that move fast more colder they move slower and forms a snowflake.






After watching the videos as a class, explain how the following crystals are formed:

Type
Explanation
Salt

salt is formed from the sea and sand when hitting shore.

Sugar

sugar is formed from sugar cane or sugar beet root.

Snowflakes

snow flakes are formed when it is cold and snowy



CRYSTAL TYPES

AIM: TO LOOK AT THE 7 DIFFERENT TYPES OF CRYSTALS


Image result for salt crystal image
Salt Crystals

Image result for sugar crystal image
Sugar Crystals

Image result for borax crystal image
Borax Crystals


7 different crystal shapes




The 7 types of crystals
Type
Number of sides
2 examples
Image
Triclinic

7

Turquoise Rhodonite

Image result for rhodonite
Monoclinic


6cube and 3d rectangle
Orthombic






Trigonal






Hexagonal






Cubic






Tetragonal