Sophia notices that her plants are not growing well and wonders why. She decides to come up with a possible explanation for this problem. Which step of the scientific method is Sophia performing?

Olivia is working on a science project. She collects information from her experiments and also looks up the results of similar experiments done by other scientists. Which step of the scientific method is Olivia performing when she organizes this data and researches the findings of others?

Jackson is studying gardening. He says, "If soil is rich in nitrogen, then grass will grow in it." Which of the following terms describes Jackson's statement?

Olivia is designing a new backpack. What are the minimum characteristics that her design must have to function?

When Jackson is riding his bicycle and suddenly stops pedaling, what property causes him to keep moving forward until he applies the brakes?

Grace is measuring the mass of a chemical sample and records it as 1000.10 grams. How many significant digits are in her measurement?

Zoe is measuring the thickness of a sheet of paper and finds it to be one-thousandth of a meter. What prefix is added to a unit to indicate one-thousandth?

Aria observes that the grass is wet in the morning and notices it rained last night. What is a conclusion based on reasoning from this evidence?

If a boat is made of iron, it will not float in water. William's boat is made of iron. Therefore, it will not float in water. What do these statements demonstrate?

Michael is measuring the mass of a bag of apples for a science experiment. Which of the following is an SI unit for mass?

Kai observes that every time he waters his plants regularly, they grow healthier. After seeing this happen with several different plants, he concludes that regular watering helps plants grow better. What is reasoning from specific evidence to a general conclusion called?

Charlotte conducts an experiment and publishes her results. The ability of other scientists to reach the same conclusion by performing the same experiment under different conditions is called __?__.

Samuel wants to lift a box onto a shelf. The ability to do this work is called __?__.

Mia is preparing a science experiment and needs to use the system of measurement accepted as the standard for scientific and technical purposes. Which system should she use?

Emma is using a thermometer to measure the temperature of a liquid. The closeness of her measurement to the liquid's actual temperature is __?__.

Nora is setting up a science experiment and needs to make sure all her measurements are consistent. She chooses a specific measure to which all other measures in her experiment will be compared to ensure uniformity. This is called a(n) __?__.

Nora is studying the size of very small particles in her science class. She finds that the diameter of a certain particle is $$4.8 \times 10^{-7}$$ meters. Express this diameter in standard form.

Samuel is reading about the population of a large city, which is 2,200,000 people. Express this number in scientific notation.

Aria is learning about different systems of measurement in her science class. She notices that in one system, you can add a prefix to each basic unit to make it larger or smaller. What system of measurement is Aria studying?

Michael is measuring the width of a notebook and finds it to be 21 units. He wants to use a metric prefix that represents a unit to the power of 10^-2. Which prefix should he use?

Scarlett is comparing the density of a new liquid she discovered to the density of water. What is the ratio of the density of the liquid to the density of water called?

Jackson wants to predict the difference in the flight distance of a hand-launched airplane and a rubber-band-launched airplane. This is an example of what method of reasoning?

Zoe finds a large, irregularly shaped rock in her backyard and wants to determine its volume. What is the best way for her to do this?

Olivia is measuring the lengths of three pieces of ribbon: 9.21 m, 12.2 m, and 13.022 m. The total length she measures is 34.432 m. What is the answer using correct significant digits?

Ava is debating with Kai and says, "A feather is light. What is light cannot be dark. Therefore, a feather cannot be dark." What fallacy occurs when a single term is ambiguously used with two different meanings in a single argument?

After Nora wore her lucky socks to a test and got a high score, she assumed the socks caused her success. What logical fallacy is Nora making by assuming that one thing causes another because it occurred before the other?

A young child said that if a person crosses his eyes too much, then they will stay crossed. He claimed that his friends should believe him because his father is a doctor. What logical fallacy did he commit?

Oliver is working on a science project and notices that he needs to describe his experimental results in a way that is clear and universally understood by other scientists. Which of the following statements best explains how mathematics and science relate to each other in this situation?

For a STEM Project, Emma built several model cars with the exact shape, proportions, and appearance as the cars they represented. What type of model did she build?

Maya is measuring the mass of a tiny particle and finds it to be 0.000 009 0 grams. How should Maya represent this mass in scientific notation?

Nora is measuring the distance for a school project and notes that 1 kilometer is equal to how many meters? What power of ten does the prefix kilo- represent?

Michael is curious about what makes up everything he can touch, see, and feel in the world around him. What can be described as the substance of the physical world?

Modified T/F: If the statement is true, write true in the blank. If it is false, replace the underlined word(s) with the word(s) that will make the statement true.

David is using inductive reasoning to determine cause and effect in his science experiment.

Modified T/F: If the statement is true, write true in the blank. If it is false, replace the underlined word(s) with the word(s) that will make the statement true.

Emma is testing a new scientific idea. If some data could exist that would prove her hypothesis to be incorrect, the hypothesis is repeatable.

Modified T/F: If the statement is true, write true in the blank. If it is false, replace the underlined word(s) with the word(s) that will make the statement true.

When Aria pushes a box across the floor, that push is known as a force.

Modified T/F: If the statement is true, write true in the blank. If it is false, replace the underlined word(s) with the word(s) that will make the statement true.

During a debate, Luna claims that a statement of fact is called a(n) proposition.

A structural engineer is designing a walkway for a pair of adjacent skyscrapers. The buildings' owners want a walkway connecting the skyscrapers' 45th floors. They have given the engineer specifications for the size of the walkway, the maximum cost of materials and construction, and factors like safety. According to the engineering design process, what is the next step for the engineer?

An engineer is designing a flying car. He has decided that the car must be able to fly for at least an hour on one tank of gas and that it must have seat belts for safety. Which of these two characteristics (flight time or seat belts) is a criterion? How do you know?

To test the hypothesis that nitrogen helps plants grow better, Elijah planted rye-grass seeds in three different mixtures of soil and nitrogen-containing liquid fertilizer. Each mixture had the same amount of soil. The first had 5 mL of fertilizer, the second had 10 mL of fertilizer, and the third had 15 mL of fertilizer. Each sample was kept in the same location and received an equal amount of water and sunlight. Which of the following would be best used as a control group? Why?

Abigail is doing a science experiment at home. She adds baking soda to a container of vinegar, and notices that a gas is produced. Does this represent a physical change or a chemical change? Why?

Mackenzie threw three darts at a target. The darts landed close to each other. She measured how close the darts landed to the center of the target. The measured distances were 20.3 cm, 18.7 cm, and 19.5 cm. Are her throws accurate or precise? Explain your answer.

Alex measured the length of a local swimming pool as 52.3 m and the width as 24.6 m. Using the formula A = lw, he calculated the area of the pool as 1286.58 m². Did Alex use significant digits correctly? If not, what should he have done?

Maya is planning a trip and sees that the temperature at her destination is 50°F. She wants to pack appropriately, so she decides to convert 50°F to degrees Celsius. Round your answer to the nearest degree.

Zoe is building a fish tank that is 15.3 cm long, 7.65 cm wide, and 5.8 cm high. Calculate the volume (V = lwh) of the tank. Round your answer to the nearest tenths place (0.1).

Isla finds a block of metal and wants to determine its density. She measures the volume of the block to be 3.40 cm³ and its mass to be 31.5 g. What is the density of the block? Round your answer to the nearest hundredths place (0.01).