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Praxis Science 7814 Questions and Answers Latest Version Graded A+

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Praxis Science 7814 Questions and Answers Latest Version Graded A+ What is the main function of roots in a plant? A. To produce flowers B. To absorb water and nutrients C. To perform photosynthesis D. To make seeds What is the state of matter with a definite shape and volume? A. Gas B. Liquid C. Solid D. Plasma What gas do humans need to breathe in order to survive? A. Carbon dioxide B. Nitrogen C. Oxygen 2 D. Hydrogen Which part of the human body controls voluntary movement? A. Heart B. Stomach C. Brain D. Lungs What causes seasons on Earth? A. Earth’s distance from the sun B. Earth’s tilt on its axis C. Earth’s tilt and revolution around the sun D. Changes in sun’s temperature Which simple machine is a seesaw an example of? A. Wheel and axle B. Pulley C. Lever 3 D. Inclined plane What is the process by which water changes from liquid to gas? A. Condensation B. Evaporation C. Freezing D. Melting Which organelle is known as the “powerhouse” of the cell? A. Nucleus B. Ribosome C. Mitochondria D. Chloroplast What is the force that pulls objects toward Earth? A. Magnetism B. Gravity C. Friction 4 D. Electricity Which of the following is a renewable resource? A. Coal B. Wind C. Natural gas D. Oil

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Praxis Science 7814 Questions and
Answers Latest Version Graded A+
What is the main function of roots in a plant?

A. To produce flowers


✔✔ B. To absorb water and nutrients


C. To perform photosynthesis

D. To make seeds




What is the state of matter with a definite shape and volume?

A. Gas

B. Liquid


✔✔ C. Solid


D. Plasma




What gas do humans need to breathe in order to survive?

A. Carbon dioxide

B. Nitrogen


✔✔ C. Oxygen

1

,D. Hydrogen




Which part of the human body controls voluntary movement?

A. Heart

B. Stomach


✔✔ C. Brain


D. Lungs




What causes seasons on Earth?

A. Earth’s distance from the sun

B. Earth’s tilt on its axis


✔✔ C. Earth’s tilt and revolution around the sun


D. Changes in sun’s temperature




Which simple machine is a seesaw an example of?

A. Wheel and axle

B. Pulley


✔✔ C. Lever


2

, D. Inclined plane




What is the process by which water changes from liquid to gas?

A. Condensation


✔✔ B. Evaporation


C. Freezing

D. Melting




Which organelle is known as the “powerhouse” of the cell?

A. Nucleus

B. Ribosome


✔✔ C. Mitochondria


D. Chloroplast




What is the force that pulls objects toward Earth?

A. Magnetism


✔✔ B. Gravity


C. Friction


3
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