Science Action/ What you need to do?
1. Set the smooth flat board into an inclined plane.
2. Attach the front part of the toy cart to a spring scale.
3. Put the cart at the bottom of the inclined plane. Observe the movement of the toy
4. Pull the cart down the inclined plane. Observe the movement.
at least 10 products or solutions found at home or in stores and their characteristics
here are 10 products or solutions found in our homes or stores and their characteristics:
fish sauce (patis)
a container of dishwashing liquid is a common sight on our kitchen counter near the sink. we apply it to clean everything we've used after preparing and having a meal.
dishwashing liquid is:
low to medium viscosity
able to produce lather
able to remove dirt and oil from surfaces.
chocolate milk is basically cow’s milk with sugar and vanilla. kids and adults love their taste which makes it a regular in the grocery store’s dairy section.
chocolate milk is:
bitter( in a good chocolaty way)
having a box of baking soda around the house is always a good thing because of its many uses.
the characteristics of baking soda:
white to off white in color
it tastes salty
have the ability to disinfect
it is a gritty powder
bleach is a chemical product used in our homes for the purpose of cleaning stubborn dirt on many things such as white clothing, bathroom floors, sinks, and others.
bleach can be described as:
translucent liquid with a slight hue
mostly bluish or yellowish
no kitchen will be complete without a bottle of vinegar waiting to be used in cooking or just plain dipping.
comes in different colors depending on the source
laundry detergent is something you must have if you own a washing machine, for those who don’t, a detergent bar would do fine. it is used to wash our dirty clothes.
laundry detergents are:
they can be powdery or molded into a bar
comes in different colors
they create lather
can dislodge most dirt from our clothes.
soy sauce is an essential cooking ingredient we get from the market or grocery stores.
soy sauce is:
dark in color
it is a liquid
has a very low viscosity
distinct and indescribable odor
salt is a must in our kitchen, it goes into all of our meals and is essential for health in the correct amounts.
salt is and can be:
well, salty in taste
it is usually white
sandy in texture
comes in various grain sizes
has the ability to preserve organic materials
has disinfecting properties
sugar is used in every home because it adds sweet goodness to our food, drinks and is a major ingredient in desserts.
sugar has these characteristics:
it is odorless
regularly comes in granules but can be processed to a powdery form
has the ability to preserve organic materials like fruit.
fish sauce flavors many of our meals here in southeast asia. we add it to our food while we are cooking and may be used as a dip during meals.
fish sauce can be described as:
having a distinct salty taste
has a unique salty smell
it has the same viscosity as tap water
it is a clear liquid with a brownish color in varying degrees, depending on the source.
all these products are found in our grocery stores and public markets for use in our homes.
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The electric generator works on the principle that when a conductor is moved in a magnetic field then the current is induced in the conductor or in other words electricity can be generated by rotating a coil inside magnetic field.
The electric generator is a machine for producing electric current or electricity. The electric generator convert mechanical energy into electrical energy.
Principle of working of an electric generator:
Electric generator is an application of electromagnetic induction.
Electric generator works on the principle that when a straight conductor is moved in a magnetic field, then current is induced in the conductor
In an electric generator a rectangular coil is made to rotate rapidly in the magnetic field between the poles of a horseshoe type magnet. When the coil rotates it cut the magnetic field lines due to which current is produced in the coil .
Electric generators are of two types:
Alternating current generator(A.C generator)
Direct current generator (D.C generator)