Middle School Science Praxis Practice Test Questions with Verified Answers

Middle School Science Praxis Practice Test Questions with Verified Answers A block is accelerating along a flat surface under the action of a force applied parallel to the surface. If the magnitude of the applied force is doubled, then the magnitude of the block's acceleration will Double A certain species of plant has bright red flowers. Which of the following most likely explains why the red color is considered an adaptation of the plant? Aids with pollination A child touches a hot plate and immediately withdraws his or her hand. The nerve impulse follows which of the following pathways to produce the almost instantaneous response? Sensory neuron → spinal cord → motor neuron → muscle A drop of water containing green plant cells and bacteria that are attracted to oxygen is placed on a glass slide, and the drop is sealed with a coverslip having grease around the edges. When the slide is illuminated, a process will occur in which of the following plant cell structures that will cause the bacteria to move toward the plant cells? Chloroplast A magnet could be most easily used to separate a mixture of sulfur and Iron A newly emerging threat to human health is the West Nile virus, which is carried by mosquitoes. Of the following suggestions, which would provide the best protection from the West Nile virus? Eliminating standing water around the home A sample contains 8 g 8 grams of a radioisotope that has a half-life of 10 years. How much time is required for the sample to decay until approximately 1 g one gram of the isotope remains in the sample? 30 years A woman is heterozygous for a particular X-linked recessive trait. Which of the following is true about the woman and any sons she may have? She will not express the trait, but her sons may or may not express the trait. An alkaline battery converts which of the following forms of energy into electrical energy? Chemical An example of a chemical change Wood Burning Asteroid Belt Region of the solar system falling roughly between the planets Mars and Jupiter Barium reacts with oxygen gas to form barium oxide, BaOB a O. Which of the following is produced in a similar reaction with oxygen gas? SrO Black Hole Region in space where the pulling force of gravity is so strong that light is not able to escape Br2B r 2, a red-brown liquid at 20°C20 degrees Celsius, is classified as Element Ca(NO3)2 Calcium Nitrate