1.
How is mass different than weight?
Correct Answer
D. Mass is the amount of matter and weight is the amount of matter times gravitational pull.
Explanation
Mass and weight are different physical quantities. Mass refers to the amount of matter in an object, while weight is the force exerted on an object due to gravity. Mass remains constant regardless of the location, while weight can vary depending on the strength of gravity. In other words, mass is an intrinsic property of an object, while weight is a result of the gravitational force acting on that object.
2.
You are given a mystery object in science class. Your teacher asks you to determine if your object is more or less dense than water. You place the object in the water and it sinks. What statement would best describe this situation?
Correct Answer
A. The mystery substance is denser than water.
Explanation
The fact that the mystery object sinks when placed in water indicates that it has a higher density than water. Objects with higher density than the liquid they are placed in will sink, while objects with lower density will float. Therefore, the statement "The mystery substance is denser than water" best describes the situation.
3.
The formula for finding density is:
Correct Answer
C. The mass divided by the volume.
Explanation
The correct answer is "The mass divided by the volume." Density is defined as the mass of an object divided by its volume. This means that to find the density, you need to divide the mass of the object by its volume.
4.
You have two plastic vials. One contains 40 ml of water and the other contains 40 ml of alcohol. Which statement is correct?
Correct Answer
B. Both vials have the same volume.
Explanation
The statement "Both vials have the same volume" is correct because it is stated in the question that both vials contain 40ml of liquid. Density and mass are not mentioned in the question, so we cannot assume that they are the same for both vials.
5.
Mass is:
Correct Answer
A. The amount of matter in an object.
Explanation
Mass is a measure of the amount of matter present in an object. It is a fundamental property of matter and is independent of the object's size or shape. Mass can be thought of as the quantity of atoms and molecules that make up an object. It is different from weight, which is the force exerted on an object due to gravity. The correct answer states that mass is the amount of matter in an object, which accurately reflects its definition.
6.
___ is the amount of matter an object has.
Correct Answer
B. Mass
Explanation
Mass is the amount of matter an object has. It is a fundamental property of an object and is independent of its location or the force acting on it. Mass can be measured using a balance or a scale and is typically measured in units such as kilograms or grams. Weight, on the other hand, is the force exerted on an object due to gravity and can vary depending on the location. Therefore, mass is the correct answer as it specifically refers to the amount of matter an object possesses.
7.
A graduated cylinder is used to measure_____
Correct Answer
C. Volume
Explanation
A graduated cylinder is used to measure volume. It is a cylindrical container with markings on the side that indicate the volume of liquid it contains. By filling the cylinder with a liquid or pouring a liquid into it, one can determine the volume of the liquid accurately. The other options, weight, mass, and density, are not measured using a graduated cylinder. Weight is measured using a scale, mass is measured using a balance, and density is calculated by dividing mass by volume.
8.
Which method of determining mass involves measuring how much an object resists acceleration?
Correct Answer
A. Inertial mass
Explanation
Inertial mass involves measuring how much an object resists acceleration. This means that the greater the inertial mass of an object, the more force is required to accelerate it. Inertial mass is a fundamental property of matter and is independent of gravitational forces. It is commonly used in physics to describe the behavior of objects under the influence of forces and motion.
9.
The law of _________ of mass states that the mass of a closed system must remain constant over time.
Correct Answer
E. Conservation
Explanation
The law of conservation of mass states that the mass of a closed system must remain constant over time. This means that in a closed system, mass cannot be created or destroyed, only transformed or rearranged. This principle is a fundamental concept in chemistry and physics and is based on the understanding that matter is neither created nor destroyed in chemical reactions or physical changes.
10.
Which measurement would be different if you were on the Moon versus on Earth?
Correct Answer
B. Weight
Explanation
The measurement that would be different if you were on the Moon versus on Earth is weight. Weight is the force exerted on an object due to gravity, and since the Moon has less gravitational pull compared to Earth, an object would weigh less on the Moon. Mass, on the other hand, is the amount of matter in an object and would remain the same regardless of the location.