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Q1 science test
review for 9 week test
| Question | Answer |
|---|---|
| What is science? | The process of learning about the natural world through observation and experimentation. |
| Who can be a scientists? | Anybody can be a scientist. |
| What is an observation vs an inference? | an observation is the information we gain from our five senses. An inference is a statement we make based on an interpretation or facts or observations. |
| what do scientist do? | Scientist create stuff do experiments, make observations, collect data, ask questions, and a lot more. |
| What is the scientific method? | the scientific methed is the process you go through when doing an experiment. |
| What are the steps to the scientific method in order? | The steps are problem, hypothesis, procedure, data/results, and conclusion. |
| What is a hypothesis? | it is an educated guess or statement about what is going to happen. |
| What is a variable? | a variable is what you are testing or something that is controlled |
| What is the difference between the Independent variable, Dependent variable, and Controlled variable? | The controlled variable is what we keep the same. the independent variable is what we purposefully change to test. the dependent is the response we are measuring |
| what do you put on before every lab? | you put on googles. |
| What do you do when chemicals get on you or there is an accident? | You tell the teacher as fast as you can. |
| True/false: You need to know where the safety shower ,eye wash station, etc.. | True |
| When do we use a safety shower, eye wash, fire extinguisher, fire blanket? | You use these items when in an emergency |
| When do we use a beaker, test tube, tongs, flask, Bunsen burner, and goggles? | You use these for an experiment. |
| What tool do we use to measure the volume of a liquid? What unit is volume? | We use a beaker an volume is in the milliliter unit. |
| How do we measure the volume of a marble? | you measure it with a triple beam balance. |
| What tool do we use to measure the mass of an object? What unit is mass? | We use a electronic scale. The unit of mass is meter |
| How do we measure the mass of an object that cannot be placed directly on the tray (marble)? | We measure it by putting the marbles in aa container and measure it on a triple beam balance then dup out the marbles and measure the container and then with the two weights you subtract them. |
| What tool would we want to use very tiny things we can’t see we just our eyes like cells? | We use a microscope to look at tiny cells and other things. |
| How do we calculate density from mass and volume. | mass divide by volume |
| What is the metric unit for length, time, mass, and volume? | the metric unit is gram and letter |
| Which lab safety rule is the most important and why? | The most important is follow the teachers instructions. |
| What is gravity? | Gravity is a force of attraction between two objects. |
| What determines the strength of the force of gravity? | The mass of an object determines the force of gravity on an object. |
| What are the time units ordered by size | year, mouth, day, hour, minute ,and second |
| What is the difference between rotation and revolution? | rotation is the movement of an object around a fixed object. revolution is the movement of one object in a circular path around a second object. |
| What causes day and night? | The revolution of the earth is what causes day and night. |
| What causes a year? | The rotation of the earth causes a year. |
| What causes the moon phases? | The moons revolution causes the moon phases. |
| What causes the tides? | The rotation of the moon. |
| What causes a leap year? | A year is 365 and 1/4 days so every 4 years the 1/4 equals a day so we add a day in February. Which equals a leap year. |
| How do you read a thermometer | you read the read or blue line |
| How do you read a triple beam balance | you read the hundreds tens and one then add them up |
| How do you read a graduated cylinder | you look at it eye level and read the meniscus |
| be able to convert between metric system | kilometer=meter gram=centigram |
| be able to understand the positions of the sun, moon, and earth and how they rotate and revolve around each other. |
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