1.
Which of these is closest in length to a centimeter?
Correct Answer
B. The diameter of a dime
Explanation
The diameter of a dime is the closest in length to a centimeter. A dime has a diameter of approximately 1.8 centimeters, which is very close to the length of a centimeter. The length of a person's foot, the thickness of a dime, and the length of a football field are all significantly longer than a centimeter, making them not the closest in length.
2.
Which of the following is NOT true about the scientific method?
Correct Answer
A. Its steps can be rearranged.
Explanation
The scientific method is a systematic approach used in all branches of science to investigate and understand the natural world. It involves making observations, formulating hypotheses, conducting experiments, analyzing data, and communicating results. However, the steps of the scientific method are not flexible and cannot be rearranged. The order of the steps is crucial for maintaining the integrity and reliability of the scientific process.
3.
Which would be the most appropriate for measuring the mass of a cow
Correct Answer
C. Kilogram
Explanation
The most appropriate unit for measuring the mass of a cow is kilogram. Kilogram is the standard unit of mass in the metric system and is commonly used for measuring the mass of large objects like animals. Cubic centimeter and cubic meter are units of volume, not mass. Milligram is a much smaller unit of mass and would not be practical for measuring the mass of a cow.
4.
Meteorology is the study of
Correct Answer
C. The atmosphere.
Explanation
Meteorology is the study of the atmosphere, specifically focusing on weather patterns, climate, and the processes that occur in the Earth's atmosphere. It involves analyzing and understanding the various components of the atmosphere, such as temperature, humidity, air pressure, and wind patterns, in order to predict and explain weather phenomena. While meteors and meteorites are also related to the study of space and celestial bodies, meteorology primarily deals with the Earth's atmosphere. Maps, on the other hand, are tools used in meteorology to visualize and represent weather data, but they are not the main focus of the study.
5.
A ___________________ is a possible explanation or answer to a question.
Correct Answer
A. Hypothesis
Explanation
A hypothesis is a possible explanation or answer to a question. It is a proposed explanation based on limited evidence or observations that can be tested through further research or experimentation. A hypothesis helps to guide the scientific inquiry process by providing a starting point for investigation and allowing for the formulation of predictions and the development of theories. It is an essential step in the scientific method and is used to generate new knowledge and understanding in various fields of study.
6.
After forming a hypothesis, you should
Correct Answer
A. Test your hypothesis.
Explanation
After forming a hypothesis, it is important to test it in order to determine its validity. Testing the hypothesis involves conducting experiments or gathering data to gather evidence that either supports or refutes the hypothesis. This step is crucial in the scientific method as it allows researchers to objectively evaluate their initial prediction and determine if it holds true. By testing the hypothesis, researchers can gather empirical evidence and make informed decisions about the validity of their hypothesis.
7.
Analyzing the results of your experiment can be
Correct Answer
D. Both (B) and (C).
Explanation
The correct answer is both (B) and (C). Analyzing the results of an experiment involves obtaining data from the experiment, as well as organizing the data into tables and graphs. Additionally, it also involves doing calculations to further understand the results. Therefore, both options (B) and (C) are correct explanations for analyzing the results of an experiment.
8.
Which of the following would most likely study waves and ocean currents?
Correct Answer
D. An oceanographer
Explanation
An oceanographer would most likely study waves and ocean currents because their field of study focuses on the physical and biological aspects of the ocean. They investigate various phenomena in the ocean, including waves, tides, and currents, in order to understand their behavior, patterns, and impact on the marine ecosystem. By studying these factors, oceanographers can gain insights into the movement and circulation of water in the oceans, which is crucial for understanding climate patterns and predicting weather events.
9.
When finding the correct answers to a question or problem, scientists use
Correct Answer
A. The scientific method.
Explanation
Scientists use the scientific method when finding the correct answers to a question or problem. The scientific method is a systematic approach that involves making observations, formulating hypotheses, conducting experiments, analyzing data, and drawing conclusions. It is a logical and objective process that relies on evidence and empirical data rather than imagination or creativity. By following the scientific method, scientists can ensure that their findings are reliable, reproducible, and based on sound scientific principles.
10.
When scientists find that a hypothesis is not supported by the tests they perform, they realize that
Correct Answer
C. They have eliminated one possible factor.
Explanation
When scientists find that a hypothesis is not supported by the tests they perform, they realize that they have eliminated one possible factor. This means that they have identified a variable or condition that is not responsible for the observed results. By ruling out this factor, scientists can narrow down their focus and refine their hypothesis to consider other potential factors that may be influencing the outcome. This process of elimination is an important part of the scientific method, as it helps scientists to gradually uncover the truth and develop more accurate explanations for phenomena.
11.
How many meters are in a kilometer?
Correct Answer
C. 1,000
Explanation
There are 1,000 meters in a kilometer. This is a commonly known conversion in the metric system. The prefix "kilo-" in the word kilometer means 1,000, so a kilometer is equal to 1,000 meters. This conversion is used in various fields such as science, engineering, and everyday measurements.
12.
What does the prefix milli mean?
Correct Answer
A. 1/1,000
Explanation
The prefix milli- denotes one thousandth of a unit. In this case, the correct answer is 1/1,000, which means that the prefix milli- signifies a division of the base unit into one thousand equal parts.
13.
The distance from New York City to Los Angeles would best be expressed using
Correct Answer
A. Kilometers.
Explanation
The distance from New York City to Los Angeles is best expressed in kilometers because kilometers are a commonly used unit of measurement for long distances. Kilometers provide a more practical and meaningful representation of the distance between the two cities compared to millimeters, centimeters, or decimeters, which are much smaller units and not suitable for measuring such large distances.
14.
The basic SI unit of length is the
Correct Answer
A. Meter.
Explanation
The basic SI unit of length is the meter. The meter is defined as the distance traveled by light in a vacuum during a specific time interval. It is widely used in scientific and everyday measurements, providing a standardized unit for measuring distances and lengths. The other options, liter, kilogram, and Kelvin, are not units of length but rather units of volume, mass, and temperature respectively. Therefore, the correct answer is meter.
15.
To measure the volume of a liquid, you would use a
Correct Answer
B. Graduated cylinder.
Explanation
A graduated cylinder is used to measure the volume of a liquid because it is specifically designed for this purpose. It has markings along its side that indicate different volume measurements, allowing for precise and accurate measurements. A ruler is not suitable for measuring volume as it is designed for measuring length. A thermometer is used to measure temperature, not volume. A balance is used to measure mass, not volume. Therefore, the most appropriate tool for measuring the volume of a liquid is a graduated cylinder.
16.
To measure the volume of a block of wood, you would use a
Correct Answer
A. Ruler.
Explanation
A ruler is used to measure the length of an object, not its volume. To measure the volume of a block of wood, you would need to measure its length, width, and height and then multiply these dimensions together. A graduated cylinder is used to measure the volume of liquids, a thermometer is used to measure temperature, and a balance is used to measure weight.
17.
Mass is measured with a
Correct Answer
B. Balance.
Explanation
Mass is a measure of the amount of matter in an object. It is typically measured using a balance, which compares the unknown mass to a known mass. By using a balance, the mass of an object can be determined accurately and precisely. A beaker, graduated cylinder, and ruler are not suitable for measuring mass as they are designed for measuring volume or length, not mass.
18.
Which of the following is NOT one of the six steps of the scientific method?
Correct Answer
D. None of the above.
Explanation
The question asks for the step that is NOT one of the six steps of the scientific method. The options include "ask a question," "test a hypothesis," "draw conclusions," and "none of the above." The correct answer is "none of the above" because all the other options are indeed steps of the scientific method.
19.
The only way to measure the accuracy of a model is to compare its prediction with
Correct Answer
B. Actual events.
Explanation
To measure the accuracy of a model, it is essential to compare its predictions with actual events. This is because actual events provide real-world data that can be used as a benchmark to evaluate the model's performance. By comparing the model's predictions with what actually happened, we can determine how well the model is able to capture and predict real-world phenomena. Comparing with other models, computer simulations, or established theories may not provide the same level of accuracy as they may be based on assumptions or simplifications that do not necessarily reflect real-world conditions.
20.
Which of the following is not a branch of Earth Science?
Correct Answer
C. Biochemistry
Explanation
Biochemistry is not a branch of Earth Science because it is a field of study that focuses on the chemical processes and substances that occur within living organisms. Earth Science, on the other hand, encompasses the study of the Earth's physical components, such as its atmosphere, geology, and natural phenomena like earthquakes and volcanoes. While the other options listed (seismology, meteorology, and volcanology) are all branches of Earth Science, biochemistry is not directly related to the study of the Earth and its processes.
21.
Scientists try to design experiments that will clearly show whether a particular ___________ was the cause of an outcome.
Correct Answer
C. Factor or variable
Explanation
Scientists design experiments to determine whether a specific factor or variable is responsible for a particular outcome. By manipulating and controlling various factors, scientists can observe the effects on the outcome and draw conclusions about causation. This process allows them to test hypotheses and make informed conclusions based on empirical evidence.
22.
You have a graduated cylinder that contains 50 mL of water. You drop a fossil into the cylinder and the water level rises to 65 mL. What is the volume of the fossil?
Correct Answer
B. 15 cubic cm
Explanation
When the fossil is dropped into the graduated cylinder, the water level rises from 50 mL to 65 mL. This means that the volume of the fossil can be calculated by subtracting the initial volume of water (50 mL) from the final volume of water (65 mL), which gives us 15 mL. Since 1 mL is equivalent to 1 cubic cm, the volume of the fossil is 15 cubic cm.
23.
The International System of Units
Correct Answer
B. Contains units that are based on the number 10.
Explanation
The International System of Units is based on the number 10, which means that the units and prefixes used in this system are all multiples or fractions of 10. This allows for easy conversion between different units and simplifies calculations. For example, there are 1000 meters in a kilometer and 100 centimeters in a meter. This system is widely used in science, engineering, and everyday life because of its simplicity and consistency.
24.
Johnny measures his height. He is 0.0206 hectometers tall. How tall is he in meters?
Correct Answer
D. 2.06 meters
Explanation
Johnny's height is given in hectometers, which is a unit of length equal to 100 meters. To convert from hectometers to meters, we need to multiply by 100. Therefore, Johnny's height in meters is 0.0206 hectometers * 100 = 2.06 meters.
25.
The Empire State Building is 0.381 km tall. How tall is the Empire State Building in centimeters.
Correct Answer
C. 38,100 centimeters
Explanation
The Empire State Building is 0.381 km tall, which is equivalent to 381 meters. Since there are 100 centimeters in a meter, we can multiply 381 meters by 100 to convert it to centimeters. Therefore, the Empire State Building is 38,100 centimeters tall.
26.
A _________________ is anything in an experiment that can influence the experiment's outcome.
Correct Answer
variable
factor
varible
varable
Explanation
The correct answer is "variable" and "factor". In an experiment, a variable refers to any factor that can be changed or manipulated, while a factor is any element that can influence the outcome of the experiment. Both terms are used interchangeably to describe elements that can affect the experiment's results. "Varible" and "varable" are misspellings of the correct terms and do not have any meaning in this context.
27.
The __________ group contains no factors or variables.
Correct Answer
control
controll
Explanation
The correct answer is "control". In experimental research, the control group is the group that does not receive the experimental treatment or intervention. It is used as a baseline comparison to evaluate the effects of the treatment. The control group is essential in determining whether any observed changes or outcomes are due to the intervention or other factors. On the other hand, "controll" is not a recognized term in this context and does not accurately describe a group in research.
28.
Each experimental group contains _______ variable(s).
Correct Answer
one
1
Explanation
Each experimental group contains only one variable. This means that in each group, there is only one factor or condition that is being manipulated or changed. This allows researchers to isolate and study the effects of this specific variable on the outcome or results of the experiment. Having multiple variables in a group would make it difficult to determine which variable is responsible for any observed changes or differences. Therefore, it is important to have one variable in each experimental group to ensure clarity and accurate analysis of the results.
29.
___________ are factors that do not change in the experiment.
Correct Answer
constant
Constant
constent
Constent
Explanation
The correct answer is "constant" and "Constant". In an experiment, constants are factors that remain the same throughout the experiment. They are not allowed to change as they could affect the results and make it difficult to determine the cause and effect relationship between variables. By keeping certain factors constant, researchers can isolate the effect of the independent variable on the dependent variable. The variations "constent" and "Constent" are incorrect spellings of the word "constant".
30.
The ____________ is an educated guess about a problem.
Correct Answer
hypothesis
hypothasis
hipothesis
hipothasis
hypothosis
Explanation
The correct answer is "hypothesis". A hypothesis is an educated guess or a proposed explanation for a problem. It is based on prior knowledge and observation, and it serves as a starting point for further investigation or experimentation. The other options provided (hypothasis, hipothesis, hipothasis, hypothosis) are misspellings of the word "hypothesis".