Response Card Clickers

1. Response Card Clickers • DO NOT push the ‘GO’ button, it will reformat the device and prevent your answers from being recorded. • Notify me, if the light is blinking continuously on your response clicker.

2. Does an object have the same mass on Earth as it does on the Moon? • Yes • No

3. For billions of years, the planets have been in a state of motion as they orbit the Sun. Which of the following is true? • A force must be continuously exerted on a planet in order to keep it in motion. • The planets do not require a force in order to keep them in a state of motion.

4. Which of the following is true about objects that fall toward Earth? • Heavier objects always fall faster than lighter objects. • All objects fall at the same rate, but air resistance affects the rate of falling.

5. When you suddenly apply the brakes in a moving car, loose objects inside the car tend to fly forward. Why does this occur? • Because objects in motion have a tendency to remain in the same state of motion. • Because a force is being applied to those objects causing them to move forward.

6. Which of the following indicates that an acceleration is occurring? • An increase in velocity. • A change in the direction of velocity. • A decrease in velocity. • All of the above.

7. An insect collides with a speeding bus. Which of the following is correct? • The bus exerts a greater force on the insect than the insect exerts on the bus. • The insect exerts a greater force on the bus than the bus exerts on the insect. • Both exert the same magnitude of force on each other.

8. Which explains why astronauts aboard the International Space Station are weightless? • Gravity does not exist at that distance from the Earth’s surface. • Orbiting objects are in a state of free fall relative to Earth’s surface which results in a state of weightlessness. • The gravitational forces of the Earth and the Moon cancel each other out where the space station is orbiting.

9. The Law of Conservation of Energy states that: • It is best to use as little energy as possible in accomplishing a task. • A system must be more efficient in order to not waste energy. • Energy cannot be created or destroyed; it may be transformed from one form to another. • All things in the universe move toward a lower state of energy.

10. Which of the following is a scientific statement about a general relationship between natural quantities that has been tested over and over again and has not yet been contradicted. • Law • Hypothesis • Theory

11. The Nature of Scientific Inquiry • Law: a general statement about the relationship of natural quantities that has been tested over and over again and has not been contradicted. • Also known as a Principle.

12. The Nature of Scientific Inquiry • Hypothesis: an educated guess; a reasonable explanation that is not fully accepted until tested over and over again by experiment. • All hypotheses must be testable – always open to the possibility of being proven false. • Tested through experimentation and observation. • If a favorite idea fails a well-designed test, it’s wrong. Get over it!

13. The Nature of Scientific Inquiry • Theory: a well-substantiated explanation of some aspect of the natural world that incorporates facts, laws and well-tested and verified hypotheses. • Scientific theories evolve as they go through stages of refinement and redefinition. • Theories must always be shaped to fit the facts.