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ATI TEAS 7

Math Practice TEAS Test

1. What is the sum of two odd numbers, two even numbers, and an odd number and an even number?

Correct answer: A

Rationale: The sum of two odd numbers is even because odd numbers have a difference of 1 and adding them results in a multiple of 2. The sum of two even numbers is even because even numbers are multiples of 2. When an odd number and an even number are added, the result is odd because the even number contributes an extra 1 to the sum, making it an odd number. Therefore, the correct answer is A. Choices B, C, and D have incorrect combinations of the sum of odd and even numbers.

2. What describes the change in direction of light when it passes through different mediums, such as air and water?

Correct answer: C

Rationale: Refraction is the change in direction of light as it moves from one medium to another, such as air to water or glass. This change occurs due to variations in the speed of light in each medium, causing the light rays to bend. When light passes through different mediums, it changes its path, a phenomenon known as refraction. Choice A, Diffraction, refers to the bending of waves around obstacles and the spreading of waves when passing through small openings, not the change in direction of light when moving between mediums. Choice B, Reflection, is the bouncing back of light rays from a surface into the same medium, not the change in direction when transitioning between different mediums. Choice D, Dispersion, involves the separation of light into its constituent colors based on their different wavelengths, not the change in direction of light when passing through different mediums.

3. Which of the following areas of the body has the most sweat glands?

Correct answer: D

Rationale: The correct answer is D: Palms. The palms of the hands have the highest concentration of sweat glands compared to other areas of the body. This is why sweating is commonly noticed on the palms during times of stress or physical exertion. Choices A, B, and C are incorrect. While these areas do have sweat glands, they are not as densely distributed as in the palms. The upper back, arms, and feet do contribute to overall body sweat, but the palms have a significantly higher density of sweat glands, making them the area with the most sweat glands.

4. What is the name for the sac-shaped structures in which carbon dioxide and oxygen exchange takes place?

Correct answer: C

Rationale: The alveoli are the tiny sac-shaped structures in the lungs where gas exchange occurs. Oxygen from the air we breathe diffuses into the bloodstream through the alveoli, while carbon dioxide, a waste product produced by cells, is removed from the blood and exhaled out of the body through the alveoli. Choices A, B, and D are incorrect. Kidneys are organs responsible for filtering waste from the blood, the medulla oblongata is a part of the brain responsible for autonomic functions, and bronchioles are smaller airway passages in the lungs that branch off from the bronchi.

5. How is power related to time?

Correct answer: C

Rationale: Power is a measure of how quickly work is done or energy is transferred. It is defined as the rate at which work is done or energy is transferred. Power is not directly or inversely proportional to time, as it depends on the amount of work done or energy transferred, not the duration over which it is done. The relationship between power and time is not a direct one, so power is unrelated to time. Choice A and B are incorrect because power's relationship with time is not one of direct or inverse proportionality. Choice D is incorrect because power is not simply the product of time and work; it is the rate at which work is done or energy is transferred, which can vary independently of time.

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