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Science Ch2,3,27 1Y
| Question | Answer |
|---|---|
| Used to hold equipment | |
| What is the SI unit of length | The metre |
| What are the names of the instruments used to measure straight lines | Metre stick/ruler |
| What is the error of parallax | When you take the reading of a liquid from the top of the meniscus |
| How do you avoid the error of parallax | Read the measurement if the liquid from the button of the meniscus |
| What do vernier callipers do and how do you use them | They measure the diameters or widths of solid objects, you use them by placing they object in the claw |
| How do you use an (a) opisometer and (b) a trundle wheel | (a) measures short curved lines, (b) long curved lengths |
| How do you find the mass of an object | You measure it with things like weighing scales |
| What is the SI unit of mass | The kilogram |
| What is the unit of time | Seconds |
| What is the SI unit for temperature | The Kelvin |
| How is temperature measured | A thermometer |
| What units is area measured in | Cm2 (squared) / m2 (squared) |
| What is the volume of an object | A measure of how much space that thing takes up |
| What are the units that volume is measured in | m3 (cubed), cm3 & mm3 |
| How do you find the volume of a regular object | LxWxH |
| What is the experiment where you find the volume of an irregular object | Put your object into water and see the difference of amount from before you put it in until after and that is how much volume your object is |
| Name some Lab safety rules | Wear protective equipment,, report any incidents immediately,, keep your workspace clean,, don’t bring food/drink or any tripping hazards into the Lab,, never touch anything without permission |
| What are the steps of the scientific method | 1. Observation. 2. Hypothesis 3. Experiment 4. Results 5. Conclusion 6. Publish results |
| What is a hypothesis | |
| An educated guess based on an observation | |
| What are variables | Things that could change. They only change one at a time |
| What is an independent variable | Changed by the experimenter (I change the Independent) |
| What is a dependant variable | Changed as a result of the independent variable |
| What is a constant variable | Always stays the same |