| Scientific Method | Observation & Inference | Variables | Measurement | Take a Chance |
| 100 | 100 | 100 | 100 | 100 |
| 200 | 200 | 200 | 200 | 200 |
| 300 | 300 | 300 | 300 | 300 |
| 400 | 400 | 400 | 400 | 400 |
| 500 | 500 | 500 | 500 | 500 |
| Final Question | ||||
The _________ is what you are trying to find out, or what you are trying to answer.
The _________ is what you are trying to find out, or what you are trying to answer.
Question
This step of the scientific method is where you share the answer to your question and give final thoughts about the experiment.
This step of the scientific method is where you share the answer to your question and give final thoughts about the experiment.
Conclusion
What two words should you always use when writing a hypothesis?
What two words should you always use when writing a hypothesis?
IF and THEN
Which step of the scientific method requires you to record your observations and measurements?
Which step of the scientific method requires you to record your observations and measurements?
Data
Which part of the scientific method tells you how to complete an experiment?
Which part of the scientific method tells you how to complete an experiment?
Test (or procedure)
What is the difference between a qualitative and a quantitative observation?
What is the difference between a qualitative and a quantitative observation?
A qualitative observation uses descriptions and the five senses. A quantitative observation uses numbers and measurements.
What is an inference?
What is an inference?
An inference is when you use information from what you observed along with your own background knowledge to make a guess about what you think may have happened or will happen in the future.
Make a qualitative observation about this picture.
Make a qualitative observation about this picture.
Answers will vary.
Make a quantitaitve observation about the picture below.
Make a quantitaitve observation about the picture below.
Answers will vary.
Make an inference about the photo below.
Make an inference about the photo below.
Answers will vary.
What type of variable is the variable that you change on purpose?
What type of variable is the variable that you change on purpose?
Independent variable
What type of variable is effected by the variable you change on purpose?
What type of variable is effected by the variable you change on purpose?
Dependent variable
Liam thought that his dog, Tyson, would move more quickly if he ate canned food instead of dry food. To test this theory, Liam gave Tyson dry food for one week and wet food for a second week. Each day during the two week experiment, Liam took Tyson on a walk around the block at 5:30 p.m. Liam recorded the time it took them to walk around the block each evening.
What is the independent variable in this experiment?
Liam thought that his dog, Tyson, would move more quickly if he ate canned food instead of dry food. To test this theory, Liam gave Tyson dry food for one week and wet food for a second week. Each day during the two week experiment, Liam took Tyson on a walk around the block at 5:30 p.m. Liam recorded the time it took them to walk around the block each evening.
What is the independent variable in this experiment?
the type of dog food (canned or dry)
Norrie thought that putting a special nail polish on her fingernails each day would make her nails grow faster. For two weeks, Norrie painted regular nail polish on her nails each night. She recorded the length of her nails each day. For the next two weeks, Norrie painted the special nail polish on her nails each night. She recorded the length of her nails each day.
What is the dependent variable for this experiment?
Norrie thought that putting a special nail polish on her fingernails each day would make her nails grow faster. For two weeks, Norrie painted regular nail polish on her nails each night. She recorded the length of her nails each day. For the next two weeks, Norrie painted the special nail polish on her nails each night. She recorded the length of her nails each day.
What is the dependent variable for this experiment?
the length of Norrie's fingernails
Amy wanted to see what type of liquid would grow plants the best. She used water, milk, Mountain Dew, and iced tea. To find the answer to her question, she planted one sunflower seed in each of four flower pots. In each pot, she used the same amount of soil. She watered the plant with the same amount of liquid once a day. Over the next few weeks, she recorded the height, color, and number of leaves on the plant.
What (if any) are the constants in this experiment?
Amy wanted to see what type of liquid would grow plants the best. She used water, milk, Mountain Dew, and iced tea. To find the answer to her question, she planted one sunflower seed in each of four flower pots. In each pot, she used the same amount of soil. She watered the plant with the same amount of liquid once a day. Over the next few weeks, she recorded the height, color, and number of leaves on the plant.
What (if any) are the constants in this experiment?
the amount of liquid used to water the plant and the amount of soil
What is the volume of liquid in this beaker? (Use correct labels.)
What is the volume of liquid in this beaker? (Use correct labels.)
300 mL
What is the mass of the object on the triple beam balance below? (Include units.)
What is the mass of the object on the triple beam balance below? (Include units.)
163.7 grams
What is the measurement of liquid inside this graduated cylinder? (Include units)
What is the measurement of liquid inside this graduated cylinder? (Include units)
43 mL
What is the mass of the object on the triple beam balance below? (Include units.)
What is the mass of the object on the triple beam balance below? (Include units.)
272.1 grams
What is the correct length of this crayon? (Use correct units.)
What is the correct length of this crayon? (Use correct units.)
7.1 centimeters or 71 millimeters
Which part of the scientific method includes what you find out and the information you knew before completing the experiment?
Which part of the scientific method includes what you find out and the information you knew before completing the experiment?
Research
Name two tools you can use to measure length.
Name two tools you can use to measure length.
- Ruler
- Yard Stick
- Meter Stick
- Cloth Measure
- Tape Measure
- Etc.
Name one of the three essential pieces of a bar graph that is missing from the bar graph below.
Name one of the three essential pieces of a bar graph that is missing from the bar graph below.
- Title
- X - Axis label (Days of the Week)
- Y - Axis Label (Numbers)
How long is this screw? (Use correct units.)
How long is this screw? (Use correct units.)
5.1 centimeters or 51 millimeters
Al wonders if adding salt to water will affect how long it takes the water to freeze. Al thinks that salt water will freeze more quickly than fresh water. He decides to check his hypothesis by conducting an experiment. Al takes two ice trays and fills one with distilled water and the other with distilled water that has two tablespoons of salt added. He makes sure he puts exactly the same amount of water in each ice tray. Al takes the trays and puts them side by side in the freezer. Al checks the ice trays every 10 minutes to see if the water in each tray has begun to freeze. Al finds that after 20 minutes the water in the ice tray without the salt has started to form ice, while the ice tray with the salt water is still completely liquid.
What are the independent and dependent variables for this experiment?
Al wonders if adding salt to water will affect how long it takes the water to freeze. Al thinks that salt water will freeze more quickly than fresh water. He decides to check his hypothesis by conducting an experiment. Al takes two ice trays and fills one with distilled water and the other with distilled water that has two tablespoons of salt added. He makes sure he puts exactly the same amount of water in each ice tray. Al takes the trays and puts them side by side in the freezer. Al checks the ice trays every 10 minutes to see if the water in each tray has begun to freeze. Al finds that after 20 minutes the water in the ice tray without the salt has started to form ice, while the ice tray with the salt water is still completely liquid.
What are the independent and dependent variables for this experiment?
Independent variable: amount of salt
Dependent variable: time it takes water to freeze
With your team, name the steps of the scientific method in order.
With your team, name the steps of the scientific method in order.
1. Question
2. Research
3. Hypothesis
4. Test
5. Data
6. Conclusion
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