I love Science due to the interesting chapters in it. It helped me understand alot about the basics of Science like how heat is transferred and the conversion of energy in objects.
18/20
33/40 9/20 60/80 I was still confused about Heat where how Radiation, Convection and Conduction act. How they give off heat. But i have learnt so after this test. I have also learnt that colour is a factor in heat. The darker the colour, the more heat the object gains. And the other way around. 19/20
34/45 13/20 62/85 I have learnt that Density has a role in heat. If the heat is higher, the object has a lower density. And the other way around. I also learnt that evaporation and boiling are very different processes. Evaporation is a slow process while boiling is a fast process. I do not understand why gradient equations are in Science though. Roses are Red
Violets are Blue Kinetic and Potential Energy They both have Synergy. After going through this chapter, i have learnt that there are 3 states of matter; Solid, Liquid and Gas.
Solids have a fixed shape and volume, usually hard and rigid, have high density and is incompressible. Liquids have fixed volume but does not have a fixed shape, have high density and is also incompressible. Lastly, Gas have no fixed shape and volume, have low density and is compressible. The three matter consists of tiny particle called atoms or molecules. The arrangement of particles of Solids are closely packed in an orderly manner, Liquids are closely packed in a disorderly manner and Gas are very far apart and randomly arranged. The movement of particles of Solids will vibrate about fixed positions, Liquids move freely within each other and Gas move freely at high speeds. The forces of attraction of Solids are strong, Liquid have moderate strength and Gas have weak forces. Temperature can affect the attractive forces which makes the movement of the particles to move faster or more slowly. The faster the movement, the larger the object will be. And, the other way around too. Particles of Gases are very far apart that it is able to be compressible and fit into smaller spaces. Particles of Solids and Liquids are closely packed together, leaving very little spaces or even none at all, making them not able to be compressed. Therefore, Gases can be compressed but Solids and Liquids cannot be compressed. 1. Firstly, i have learned that Density can be measured/calculated by dividing the MASS and the VOLUME of a substance.
E.g: The VOLUME of a certain type of water is 100 and the MASS of the water is 20, the equation would be 20/100 (MASS/VOLUME). The Density of the water will then be 0.5g/ml 2. Secondly, the Density will affect if an object will float or sink in the water. a higher Density object will sink, a lower Density object will float. E.g: With the water stated above, and two objects, 0.25g/ml and 1g/ml. The object which is 0.25g/ml will remain afloat if placed in the water whereas the 1g/ml object will sink as it has a Density of higher than the water. 3. Lastly, i learned that we can easily tell if a floating object in the water will be half submerged or fully merged by dividing the object Density with the water Density. E.g: Again, using the water above, with two objects of 0.25g/ml and 0.1g/ml, we divide the 0.25 with the water density, 0.5. (0.25/0.5 will become HALF.) Therefore, the object will be half submerged. Now, we divide 0.1 with 0.5. (0.1/0.5 will become ONE FIFTH.) Therefore, the object will be submerged 20% into the water. Step 1. First, make sure the number 0 on the minir scale is the same as the 0 on the major scale.
Step 2. Then, place the object in between the jaws on the Vernier caliper and lock the clamp screw. Step 3. Look at the minor scale where the 0 is located on the major scale. Example: The number 0 on the minor scale is allign with the number 1.5 on the major scale. Step 4. If the allignment is not allign with a number on the major scale, look at where on the minor scale the numbers allign with another number on the major scale. Example: If the number is between 1.5 and 1.6, look at the minor scale numbers. If the number 5 alligns with one of the line on the major scale, the length of the object is 1.55 |
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