Q: Q: If everything else stays the same in a system with a gas in it, and the gas gets warmer, what will happen to its pressure, generally? Read this paragraph and choose the correct option from the provided answers: Why does the pressure of a gas increase as it gets warmer? Particles of a gas are constantly moving and bumping into things. The force of the collisions is measured by pressure. Pressure is the amount of force exerted on a given area, such as pounds of force per square inch. When gas particles heat up and gain energy, they move faster. This causes more collisions and greater pressure. Therefore, heating particles of gas in a closed space causes the pressure of the gas to increase. Explore the behavior of gas particles at different temperatures at the following URL. Change the temperature of the gas and watch what happens to its particles. Choices: - it drops - it stays the same - it's eliminated - it increases A:
A: it increases

Q: Q: What is the term for a very rapid motor response that is not directed by the brain? Read this paragraph and choose the correct option from the provided answers: The somatic nervous system also controls some unconscious movements called reflexes. A reflex is a very rapid motor response that is not directed by the brain. In a reflex, nerve impulses travel to and from the spinal cord in a reflex arc, like the one in Figure below . In this example, the person jerks his hand away from the flame without any conscious thought. It happens unconsciously because the nerve impulses bypass the brain. Choices: - instinct - adaptation - sensor - reflex A:
A: reflex

Q: Q: Oceans are made of a solution of what? Read this paragraph and choose the correct option from the provided answers: Flickr:xiquinhosilva. Oceans are made of a solution of salt and water . CC BY 2.0. Choices: - water and carbon - salt and carbon - salt and algae - salt and water A:
A: salt and water

Q: Q: Aids is an infectious disease of which system? Read this paragraph and choose the correct option from the provided answers: AIDS is an infectious disease of the immune system caused by a virus. Some diseases of the immune system are noninfectious. They include autoimmune diseases and allergies. Choices: - muscular - digestion - endocrine - immune A:
A: immune