which law of motion explains the behavior of rockets in space
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ATI TEAS 7

Mometrix TEAS 7 science practice test

1. Which law of motion explains the behavior of rockets in space?

Correct answer: C

Rationale: The correct answer is Newton's Third Law. Newton's Third Law states that for every action, there is an equal and opposite reaction. In the case of rockets in space, the action is the expulsion of gas from the rocket engines, and the reaction is the forward motion of the rocket. This law explains how rockets are able to propel themselves forward in the vacuum of space. Choices A and B are incorrect because Newton's First Law (inertia) and Second Law (F=ma) do not directly explain the behavior of rockets in space. Choice D is incorrect as Newton's Third Law specifically addresses the principle behind rockets' motion in space.

2. What is the term for the particles moving within a substance?

Correct answer: C

Rationale: The term for the particles moving within a substance is typically 'molecules' or 'atoms,' depending on the state of matter. In this context, 'molecules' represent the particles moving around within a substance, especially in the liquid and gas states, while 'atoms' are the fundamental building blocks of matter. 'Ions' are charged particles that can be present in a substance but are not necessarily the primary particles in motion. 'Kinetic energy' is not a term used to describe the particles themselves but rather the energy associated with their motion.

3. Which region of the small intestine is the primary site of absorption?

Correct answer: B

Rationale: The jejunum is the correct answer. It is the primary site of nutrient absorption in the small intestine. The duodenum mainly facilitates digestion, the ileum is responsible for further absorption, while the cecum is part of the large intestine and not involved in nutrient absorption.

4. When a person throws a ball horizontally, what force changes the direction of the ball's motion?

Correct answer: B

Rationale: When a person throws a ball horizontally, the initial force that propels the ball forward is the force of throwing (A). However, the force that changes the direction of the ball's motion is the gravitational force (B). Gravitational force acts vertically downward, causing the ball to follow a curved path. Air resistance (C) and normal force from the ground (D) do not directly change the direction of the ball's motion in this scenario.

5. Which structure connects the two hemispheres of the brain, allowing communication and coordination between them?

Correct answer: A

Rationale: The correct answer is the corpus callosum. It is a thick band of nerve fibers that connects the two hemispheres of the brain, facilitating communication and coordination between them. The thalamus acts as a relay station for sensory information, the hypothalamus regulates basic functions like hunger and thirst, and the medulla oblongata controls vital functions such as breathing and heart rate. Therefore, choices B, C, and D are incorrect as they do not specifically connect the two hemispheres of the brain as the corpus callosum does.

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