Physical Science Unit1 Test - Scientific Investigation

To obtain the most accurate measurement from a graduated cylinder, you should view it at eye level. This ensures that you are looking directly at the meniscus (the curved surface of the liquid) and eliminates parallax errors that can occur when viewing from an angle. Therefore, the correct position to view the graduated cylinder is position 3.

Scientists usually state an hypothesis in an "If...then..." format. This is because an hypothesis is a proposed explanation or prediction that can be tested through experimentation or observation. By stating it in an "If...then..." format, scientists are able to clearly define the cause-and-effect relationship they are investigating. This allows them to design experiments or make observations that can either support or refute the hypothesis, leading to further scientific understanding.

A quantitative observation refers to the measurement or description of a phenomenon using numerical data. In this context, zoo animals and names are not relevant to quantitative observations as they do not involve numerical data. Therefore, the correct answer is "numbers" as quantitative observations involve the use of numbers to describe or measure a particular phenomenon.

The given correct answer includes three types of variables in experimental design: dependent, independent, and control. Dependent variables are the ones that are being measured or observed in an experiment and are expected to change as a result of the independent variable. Independent variables are manipulated or controlled by the researcher to test their effect on the dependent variable. Control variables are kept constant throughout the experiment to eliminate any other factors that could influence the results. The term "smooth" does not fit into the three types of variables in experimental design.

The correct formula for finding the volume of a box is Length x Width x Height. This formula multiplies the dimensions of the box to calculate the total space inside it. In this case, the formula L x W x H would be used to determine the volume of the box needed to ship Mrs. Stevens' wine from California.

The prefix "milli-" denotes a factor of one thousandth. In this case, the correct answer ".001" represents the value that is one thousandth of the original unit.

The statement "Sheila has a stain on her shirt" is an example of a qualitative observation because it describes a characteristic or quality of Sheila's shirt without providing any numerical data. It is a subjective observation based on visual perception rather than a measurable or quantifiable attribute.

The volume of the marble in the graduated cylinder is 10 cm3. This can be determined by subtracting the initial volume of water (80 mL) from the final volume of water (90 mL), which gives us the volume of the added marble. Since 1 mL is equal to 1 cm3, the volume of the marble is 10 cm3.

Observation is the correct answer because it refers to the act of using the 5 senses (sight, hearing, taste, smell, and touch) to gather information about the surrounding environment. By observing, one can directly perceive or witness something without making any assumptions or drawing conclusions. It is a fundamental step in the scientific method and plays a crucial role in collecting data and forming a basis for further analysis and investigation.

Physical Science is indeed the study of the relationship between matter and energy. It explores the fundamental principles and laws that govern the behavior of matter and energy, including topics such as physics, chemistry, and earth science. By studying physical science, we gain a deeper understanding of the natural world and how it functions.

To describe the length of a grain of rice, millimeters (mm) would be the most appropriate unit of measurement. Millimeters are commonly used to measure small objects or distances, and they provide a more precise measurement for the length of a grain of rice compared to other units like decimeters, meters, or kilometers.

The given statement is true. The phrase "King Henry Doesn't Usually Drink Chocolate Milk" is a mnemonic device used to remember the six most common SI units for measurement. Each letter in the phrase represents the first letter of a unit: K for kilogram, H for hectogram, D for decagram, U for unit, D for decigram, C for centigram, and M for milligram. This helps individuals recall the units in the correct order and is a useful tool for learning and remembering the SI units.

The formula to find density is density = mass / volume. This formula is derived from the concept that density is the measure of how much mass is contained in a given volume. By dividing the mass of an object by its volume, we can determine its density.

To understand scientific investigation, one needs to have basic science skills and knowledge of the scientific method. Basic science skills include the ability to gather and analyze data, make observations, and draw conclusions. The scientific method is a systematic approach to conducting scientific research, which involves making observations, formulating hypotheses, conducting experiments, and analyzing data. These skills and methods are essential for understanding and conducting scientific investigations.

Mass and weight are not the same thing. Mass refers to the amount of matter in an object and is measured in kilograms or grams. Weight, on the other hand, is the force exerted on an object due to gravity and is measured in newtons or pounds. While mass remains constant regardless of the location, weight can vary depending on the strength of gravity. Therefore, the statement that mass and weight are the same thing is false.

When communicating experiment results in science, it is important to include tables and graphs if needed as they provide visual representations of data, making it easier for readers to understand the results. Additionally, writing a conclusion that states whether the hypothesis was right or wrong is crucial as it summarizes the findings and helps draw final conclusions. Lastly, ensuring that the lab report is free from bias is essential to maintain the integrity and objectivity of the scientific process. Therefore, including all of the mentioned elements in the lab report is necessary for effective communication of experiment results.

A graduated cylinder is used to measure the volume of an irregularly-shaped solid because it has markings on its side that indicate the volume of liquid it contains. By placing the solid in the graduated cylinder and measuring the change in liquid volume, one can determine the volume of the solid. A ruler would not be suitable for measuring the volume of an irregularly-shaped solid as it only measures length, not volume. A balance is used to measure the mass of an object, not its volume. A thermometer measures temperature, which is unrelated to volume.

not-available-via-ai

To convert meters to centimeters, you need to multiply the value by 100. Therefore, 10m is equal to 10 * 100 = 1,000 cm.

The correct answer is 354.46g because the question asks for the mass of the rock, and the only option that provides a unit of measurement for mass (grams) is 354.46g. The other options either have a different unit of measurement (ml) or do not provide a unit at all.

A valid hypothesis must be testable in order to determine its accuracy or validity. This means that it must be possible to design experiments or gather evidence that can either support or refute the hypothesis. Without the ability to test a hypothesis, it remains speculative and cannot be proven or disproven. Therefore, testability is a crucial characteristic of a valid hypothesis.

Charts, graphs, and scientific notation are all different ways to collect data and organize information in a useful way. Charts and graphs visually represent data, making it easier to understand patterns and trends. Scientific notation is a way to express very large or very small numbers in a more concise format. These methods can help researchers analyze and interpret data effectively. "Ship it off to another lab" and "leave it in your backpack" are not valid ways to collect or organize data.

The metric prefix "kilo" represents the value of one thousand. It is commonly used to denote larger quantities or measurements, such as kilogram (1000 grams) or kilometer (1000 meters). Therefore, "kilo" is the correct answer to the question as it matches the given definition of "thousand".

The given statement is false because Physical Science is actually the study of two fields of science called Physics and Chemistry, not Biology. Biology is a separate branch of science that focuses on the study of living organisms. Physical Science, on the other hand, deals with the study of non-living matter and energy, which includes Physics and Chemistry.

Inference is the correct answer because it refers to the process of drawing a conclusion or making a judgment based on the information provided. It involves using reasoning and evidence to come to a logical conclusion, even if it is not explicitly stated. In this case, making a conclusion from the information provided requires using inference to connect the dots and make an educated guess or judgment.

Scientific Laws tell us "what" happened. Scientific laws are general statements that describe how the natural world behaves under certain conditions. They summarize observations and experiments and provide a framework for understanding and predicting phenomena. These laws explain the "what" of a particular event or phenomenon, describing the relationships between variables and the outcomes observed in experiments or observations. They do not necessarily explain the "why" or the underlying mechanisms behind the observed phenomena, but they provide a reliable description of what occurs.

A bar graph is best used to measure a large rate of change over time because it visually displays the magnitude of change between different categories or time periods. The height of each bar represents the quantity or value being measured, allowing for easy comparison and identification of trends. This type of graph is particularly suitable for showing significant variations or fluctuations over time, making it ideal for analyzing large rates of change.