Ques: Answer the following question given this paragraph: As the example implies, gravitational force is completely negligible on a small scale, where the interactions of individual charged particles are important. On a large scale, such as between the Earth and a person, the reverse is true. Most objects are nearly electrically neutral, and so attractive and repulsive Coulomb forces nearly cancel. Gravitational force on a large scale dominates interactions between large objects because it is always attractive, while Coulomb forces tend to cancel. Q: Gravitational force on a large scale dominates interactions between large objects because it is always what? Choices: - ugly - vulnerable - suitable - attractive A:
Ans: attractive

Ques: Answer the following question given this paragraph: Annelids called polychaete worms live on the ocean floor. They may be filter feeders, predators, or scavengers. The amazing feather duster worm in Figure below is a polychaete that has a fan-like crown of tentacles for filter feeding. Q: Where do polychaete worms live? Choices: - in tide pools - attached to marine life - in coral reefs - the ocean floor A:
Ans: the ocean floor

Ques: Answer the following question given this paragraph: In a wheel and axle, force may be applied either to the wheel or to the axle. This force is called the input force. A wheel and axle does not change the direction of the input force. However, the force put out by the machine, called the output force, is either greater than the input force or else applied over a greater distance. Q: What is the term for the force applied to a wheel and axle? Choices: - velocity force - momentum - output force - input force A:
Ans: input force

Ques: Answer the following question given this paragraph: The Ventricles There are four ventricles within the brain, all of which developed from the original hollow space within the neural tube, the central canal. The first two are named the lateral ventricles and are deep within the cerebrum. These ventricles are connected to the third ventricle by two openings called the interventricular foramina. The third ventricle is the space between the left and right sides of the diencephalon, which opens into the cerebral aqueduct that passes through the midbrain. The aqueduct opens into the fourth ventricle, which is the space between the cerebellum and the pons and upper medulla (Figure 13.18). Q: What organ has four ventricles, all of which developed from the original hollow space within the neural tube? Choices: - heart - liver - bladder - brain A:
Ans:
brain