Nature of Science Study Guide Review The steps
- Slides: 48
Nature of Science Study Guide Review
The steps scientists take to create, test, and prove a hypothesis Scientific process
Something that can be expressed in numbers Ex: time, temperature, mass, distance, volume Quantitative observation
Something that includes a description Ex: sight, sound, smell, color, hard, soft Qualitative observation
a logical conclusion drawn from the available evidence and prior knowledge inference
A tentative explanation for an observation that can be tested by further investigation hypothesis
an organized procedure used to prove a hypothesis experiment
the group that stays the same in the experiment; never changes. Is the “normal” Control group
the group that you change in the experiment Experimental group
the factor that I change in the experiment Independent variable
the factor that you measure to gather results in the experiment Dependent variable
What is the difference between qualitative and quantitative observation? Quanitative = numbers Qualitative = description
Identify each statement as qualitative or quantitative. The building is taller than the tree. qualitative
Identify each statement as qualitative or quantitative. The sidewalk is long. qualitative
Identify each statement as qualitative or quantitative. The temperature outside is 95 F. quantitative
Identify each statement as qualitative or quantitative. It is warm outside. qualitative
Identify each statement as qualitative or quantitative. The tree is 30 feet tall. quantitative
Identify each statement as qualitative or quantitative. The building has 25 stories. quantitative
Identify each statement as an inference or an observation. The container is filled to the 350 m. L mark with water. observation
Identify each statement as an inference or an observation. The caterpillar did not eat the moth because it is a butterfly. inference
Identify each statement as an inference or an observation. The sun rose at 6: 54 am this morning. observation
Identify each statement as an inference or an observation. When the sun came out it made the rain stop. inference
Identify each statement as an inference or an observation. I can jump high in tennis shoes because they have a rubber bottom inference
Identify each statement as an inference or an observation. Water can fall to the ground as rain, snow, or hail. observation
Identify each statement as either: question, hypothesis, experiment or conclusion Rene grew bacteria from the mouth on petri dishes in the lab. She placed different drops of mouthwashes on the bacteria in each plate. experiement
Identify each statement as either: question, hypothesis, experiment or conclusion Justin wondered if dyes could be taken out of plant leaves, flowers, and stems. question
Identify each statement as either: observation, hypothesis, experiment or conclusion Angela’s experiment proved that earthworms move away from the light. conclusion
Identify each statement as either: observation, hypothesis, experiment or conclusion Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted. hypothesis
What is the correct format for writing a hypothesis? If I ________, then ______ Because __________.
What is the purpose of a hypothesis? To explain what we have observed
The SI unit for mass is ____________. What instrument is used to measure mass? SI unit for mass = gram (g) Triple beam balance
The SI unit for volume is ____________. What instrument is used to measure volume? SI unit for volume = liter (L) Graduated cylinder
The SI unit for length is ____________. What instrument is used to measure length? SI unit for length = meter (m) ruler
Write the SI prefixes in order from largest to smallest. Kilo Hecto Deca Deci Centi Milli 1000 10 0. 1 0. 001
What are the measurements of each graduated cylinder? 57 m. L 23 m. L 22 m. L
A = 0. 5 cm, 5 mm B = 1. 3 cm, 13 mm C = 2. 6 cm, 26 mm D = 4. 1 cm, 41 mm
643. 2 g 6. 7 g 140. 4 g
What is the difference between the control group and experimental group? Control group stays the same; normal Experimental group changes
Sponge. Bob Clean Pants Sponge. Bob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told him that he should try using Clean-O detergent, a new laundry soap she found at Sail-Mart. Sponge. Bob made sure to wash one pair of pants in plain water and another pair in water with the Clean-O detergent. After washing both pairs of pants a total of three times, the pants washed in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water.
What was the problem Sponge. Bob wanted to investigate? a. Is Clean-O detergent effective? b. Is the length of time the pants are washed important? c. How does water temperature affect cleaning pants? d. Does how often I wash my pants affect how clean they are?
What was the problem Sponge. Bob wanted to investigate? a. Is Clean-O detergent effective? b. Is the length of time the pants are washed important? c. How does water temperature affect cleaning pants? d. Does how often I wash my pants affect how clean they are?
What is the independent variable? a. Water temperature. b. Length of wash time. c. Laundry soap d. Size of washing tub.
What is the independent variable? a. Water temperature. b. Length of wash time. c. Laundry soap d. Size of washing tub.
What is the dependent variable? a. Appearance of pants b. Laundry soap c. Amount of water d. Length of wash time
What is the dependent variable? a. Appearance of pants b. Laundry soap c. Amount of water d. Length of wash time
What should Sponge Bob’s conclusion be? a. Clean-O best cleans his pants. b. Plain water best cleans his pants. c. Cold water best cleans his pants. d. Clean-O is not effective cleaning his pants.
What should Sponge Bob’s conclusion be? a. Clean-O best cleans his pants. b. Plain water best cleans his pants. c. Cold water best cleans his pants. d. Clean-O is not effective cleaning his pants.