ATI TEAS 7
physics
1. How does the acceleration of an object change if the force acting on it is doubled?
- A. Acceleration is halved
- B. Acceleration doubles
- C. Acceleration remains unchanged
- D. Acceleration quadruples
Correct answer: b
Rationale: According to Newton's second law (F = ma), if force is doubled and mass remains constant, acceleration doubles.
2. A study finds a link between increased screen time and lower academic performance. What additional information would be most helpful in interpreting this finding?
- A. The average socioeconomic status of the study participants.
- B. The specific types of screen activities participants engaged in.
- C. Whether the students had access to healthy meals and snacks.
- D. The participants' ages and grade levels.
Correct answer: B
Rationale: Knowing the specific types of screen activities participants engaged in would provide crucial context for interpreting the link between increased screen time and lower academic performance. For example, if the majority of screen time was spent on educational apps or programs, the impact on academic performance may differ compared to if the screen time was mostly spent on social media or gaming. Understanding the nature of screen activities can help determine the potential mechanisms behind the observed relationship.
3. What phenomenon occurs when light passes through a medium but does not change direction, such as when passing through a window?
- A. Diffraction
- B. Reflection
- C. Dispersion
- D. Transmission
Correct answer: d
Rationale: Transmission occurs when light passes through a medium without changing direction, as observed when light passes through a window.
4. What is the difference between constructive and destructive interference of waves?
- A. They have the same effect on wave amplitude.
- B. Constructive interference increases amplitude, while destructive interference decreases it.
- C. They only affect light waves, not sound waves.
- D. They depend on wave speed, not amplitude.
Correct answer: B
Rationale: Constructive interference occurs when peaks of two waves overlap, resulting in a higher combined amplitude. Destructive interference happens when peaks and troughs overlap, cancelling each other out and reducing the overall amplitude.
5. Which sentence uses the gerund (-ing) form correctly?
- A. My favorite activity is playing tennis.
- B. He enjoys to travel to new places.
- C. Reading a good book is relaxing.
- D. Writing is her passion.
Correct answer: A
Rationale: Option A uses the gerund as the direct object of "is," while the other options lack a clear function for the -ing form.
6. What are the four main types of macromolecules that are essential for life?
- A. Carbohydrates, lipids, proteins, and nucleic acids
- B. Carbohydrates, proteins, fats, and vitamins
- C. Minerals, vitamins, proteins, and fats
- D. Carbohydrates, lipids, proteins, and hormones
Correct answer: A
Rationale: These four types of macromolecules are the building blocks of life and play essential roles in various cellular processes. Carbohydrates: Carbohydrates are the primary energy source for cells and provide structural support for cell membranes and other cellular components. They are composed of carbon, hydrogen, and oxygen atoms and are classified into monosaccharides (simple sugars), disaccharides (double sugars), and polysaccharides (complex sugars). Lipids: Lipids are a diverse group of molecules that include fats, oils, and waxes. They are composed of carbon, hydrogen, and oxygen atoms and are insoluble in water but soluble in nonpolar solvents. Lipids serve as energy storage molecules, provide insulation for cells and organs, and are essential components of cell membranes. Proteins: Proteins are complex molecules composed of amino acids linked together by peptide bonds. They are responsible for a vast array of cellular functions, including structural support, enzymatic catalysis,
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