1.
Scientist use this skill to look at things closely.
Correct Answer
C. Observation
Explanation
Observation is the correct answer because scientists use this skill to closely examine and analyze things. Through observation, scientists gather information, make note of patterns, and identify relationships between variables. It is a fundamental skill in the scientific process as it helps in generating hypotheses, collecting data, and drawing conclusions. By carefully observing and documenting their findings, scientists can gain a better understanding of the natural world and make meaningful discoveries.
2.
Matter is anything that takes up space.
Correct Answer
A. True
Explanation
Matter is defined as anything that has mass and occupies space. This means that matter takes up physical space. Therefore, the statement "Matter is anything that takes up space" is true.
3.
A solid is anything that has a definite shape.
Correct Answer
A. True
Explanation
A solid is a type of matter that has a definite shape and volume. Unlike liquids and gases, solids maintain their shape and do not flow or take the shape of their container. This is because the particles in a solid are closely packed together and have strong intermolecular forces holding them in place. Therefore, the statement that a solid is anything that has a definite shape is true.
4.
How would you explains the way atoms in a solid move?
Correct Answer
B. They vibrate.
Explanation
Atoms in a solid are constantly in motion, but their movement is limited. They vibrate around their fixed positions. This vibration is caused by the thermal energy present in the solid. The atoms oscillate back and forth, but they do not move from their positions in the solid lattice structure. This vibrating motion is responsible for the properties of solids, such as their rigidity and shape.
5.
Which matter is an example of a liquid?
Correct Answer
D. Milk
Explanation
Milk is an example of a liquid because it has a definite volume but takes the shape of its container. Liquids are characterized by their ability to flow and lack a fixed shape. Milk, being a liquid, can be poured and has a fluid consistency, unlike jello, pudding, and clay, which are all solid materials.
6.
The ripping of paper is an example of what kind of change?
Correct Answer
C. pHysical
Explanation
The ripping of paper is an example of a physical change because it does not alter the chemical composition of the paper. It only changes its physical appearance and form.
7.
Scientist use this method (process) to help them solve problems.
Correct Answer
A. The Scientific Method
Explanation
The correct answer is "The Scientific Method" because scientists use this method to systematically investigate and solve problems. It involves making observations, formulating hypotheses, conducting experiments, analyzing data, and drawing conclusions. This method allows scientists to gather reliable and objective information, test their ideas, and make informed decisions based on evidence.
8.
Define hypothesis
Correct Answer
D. An educated scientific guess
Explanation
Hypothesis is defined as an educated scientific guess because it involves formulating a statement or a proposed explanation based on existing knowledge and observations. It is not a random guess, as it requires background information and logical reasoning. Additionally, it is more than just a fancy scientific word or a simple solution, as it involves a systematic approach to testing and gathering evidence to support or refute the proposed explanation.
9.
Scientist needs a control group and an experimental group. Define experimental group.
Correct Answer
A. It is the group that is being tested in order to compare results to the control group
Explanation
The experimental group refers to the group that is being subjected to the specific treatment or intervention in a scientific study. This group is used to compare and evaluate the effects or outcomes of the treatment being tested. By comparing the results of the experimental group to the control group, scientists can determine the effectiveness or impact of the treatment being studied.
10.
Which of these best describes a scientist?
Correct Answer
A. Someone who thinks critically, asks questions, and like to solve problems. Even kids can be a scientist.
Explanation
This answer best describes a scientist because it highlights the key qualities and actions that scientists possess. Thinking critically, asking questions, and solving problems are fundamental aspects of the scientific process. Additionally, the statement emphasizes that even children can engage in scientific thinking, highlighting the inclusive nature of science. The other options, such as being famous, inventing something, or getting good grades, are not accurate descriptions of what it means to be a scientist.