Laws vs Theories
How do scientific theories evolve over time?
a. By remaining static and unchanging
b. By being proven once and for all
c. By being revised and refined with new evidence
d. By becoming less supported
c. By being revised and refined with new evidence
What type of energy is stored in a compressed spring?
a. Sound energy
b. Elastic energy
c. Heat energy
d. Magnetic energy
b. Elastic energy
What does the X-axis on a time-distance graph represent?
A. Distance
B. Time
C. Nothing
D. Happiness
B. Time
4. Which of the following is an example of potential energy?
a. A moving car
b. A stretched rubber band
c. A spinning top
d. A bouncing ball
d. A bouncing ball
Why are scientific theories well-supported and widely accepted explanations?
a. Because they are believed to be true
b. Because they have been proven with 100% certainty
c. Because they are continuously tested and supported by evidence
d. Because they are based on personal opinions
c. Because they are continuously tested and supported by evidence
What type of energy does a battery store?
a. Nuclear energy
b. Chemical energy
c. Solar energy
d. Wind energy
b. Chemical energy
What does the Y-axis on a time-distance graph represent?
A. Distance
B. Time
C. Nothing
D. Happiness
A. Distance
Which of the following activities does not involve a transformation between potential and kinetic energy?
a. Bouncing a ball
b. Swinging on a swing
c. Riding a bike
d. Sleeping
d. Sleeping
If energy is neither created nor destroyed, what law is this demonstrating?
a. Newton's First Law
b. Ohm's Law
c. Law of Conservation of Energy
d. Hooke's Law
c. Law of Conservation of Energy
What type of energy is stored in food?
a. Thermal energy
b. Light energy
c. Sound energy
d. Chemical energy
d. Chemical energy
What force causes a car to slow down when the brakes are applied?
a. Friction
b. Gravity
c. Inertia
d. Magnetism
a. Friction
In a roller coaster ride, when the car is at the top of a hill, which type of energy is at its highest?
a. Potential energy
b. Kinetic energy
c. Mechanical energy
d. Thermal energy
a. Potential energy
Which of the following best describes a scientific law?
a. A guess or assumption made by scientists
b. A description of a specific relationship under given conditions in the natural world
c. A rule enforced by scientific organizations
d. A theory that has not been widely accepted
b. A description of a specific relationship under given conditions in the natural world
When you turn on a flashlight, what kind of energy transfer is taking place?
a. Chemical to electrical to thermal
b. Electrical to chemical to mechanical
c. Mechanical to thermal to electrical
d. Thermal to light to electrical
a. Chemical to electrical to thermal
Which of the following best describes an object's motion if the distance-time graph is a perfect diagonal line?
a. Constant speed
b. Accelerating
c. Decelerating
d. Changing direction
a. Constant speed
4. What happens to the potential energy of a ball as it falls from a shelf to the ground?
a. It decreases
b. It stays the same
c. It increases
d. It transforms
a. It decreases
20. What is the ultimate goal of scientific theories and laws in the scientific community?
a. To confuse future scientists
b. To restrict scientific advancements
c. To provide explanations and predict natural phenomena
d. To impose limitations on scientific research
c. To provide explanations and predict natural phenomena
An ice cube melting on a table illustrates a change from:
a. Chemical to thermal
b. Potential to kinetic
c. Solar to mechanical
d. Electrical to light
a. Chemical to thermal
In a distance-time graph, what does a curve indicate about the object's motion?
a. Acceleration or deceleration
b. Constant speed
c. Changing direction
d. The object is at rest
a. Acceleration or deceleration
When a child swings on a swing, at what point in the swing is the kinetic energy the highest?
a. At the top of the swing
b. At the lowest point of the swing
c. When starting to swing
d. When stopping
b. At the lowest point of the swing