| A | B |
|---|
| What are the three base units of measure for the metric system? | Meter, Liter, Gram |
| Which unit of measure is the largest for meter, liter, and gram? | Kilo |
| What type of measurement would you use to measure how heavy your pencil is? | Mass |
| What is a fair test? | All the variables remain the same except for the test variable. |
| What are the three main types of graphs? | Line, pie, bar |
| Since chemicals in the laboratory are to be considered dangerous, you should: | Leave them alone |
| A force ___________. *Is expressed in newtons, *Can cause an object to speed up, slow down, or change direction, *Is a push or a pull, or *All of the above) | All of the above |
| Which physical property of matter describes the relationship between mass and volume? | Density |
| What is thermal expansion? | Molecules spreading apart due to heat |
| How can we explain diffusion? | Particles move from high to low concentration |
| Which answer changes with gravity? | Weight |
| Which of the following statements about weight is true? *Weight is a measure of the gravitational force on an object, *Weight varies depending on where the object is located in relation to the Earth, *Weight is measured by using a spring scale, or *All of the above | All of the above |
| Changing shape and freezing are two forms of physical changes. Select one more. *Rusting, *Production of a smell, *Heat, *fizzing, *foaming, or *dissolving | Dissolving |
| Which of the following statements describes a chemical property of a piece of chalk? *chalk is a solid, *chalk can be broken into pieces, *chalk is white, or *chalk will bubble in vinegar | Chalk will bubble in vinegar |
| During which change of state do atoms, molecules, and particles become more ordered? | Liquid to a solid |
| What happens to the molecules as water changes from solid, to liquid, to gas? | The particles are getting farther apart and moving faster |
| True or False. The mass of an ice cube does not change when it melts. | True |
| What do engineers have to consider when deciding how fast a car can go? | Safety |
| What factors do engineers have to consider when designing a product? *Durability, *Environmental Impact, *Cost, *All of the above | All of the above |
| Cellphones are engineered items. How do they affect our daily lives? *Navigation, *Planning, *Instant communication, or *All of the above | All of the above |
| What impacts do engineered automobiles have on our daily lives? | Positive and negative |
| What do engineers have to consider when designing a product? *Cost, *Dependent variable, or *Velocity | Answer - Cost |
| Why do engineers need to learn from past failures? | To change future design for the better |
| What is the energy of motion? | Kinetic |
| When is the potential energy the greatest in a rollercoaster? *At the bottom of the first hill, *At the top of the first hill, *At the top of the second hill, or *At the bottom of the second hill | Answer - At the top of the first hill |
| What is the law of conservation of mass? | Mass cannot be created or destroyed during ordinary chemical or physical changes |
| What do we call it when thermal energy is transferred through direct contact? | Conduction |
| What do we call it when thermal energy is transferred through the circulating movement of a gas or liquid? | Convection |
| What do we call it when energy is transferred by electromagnetic waves? | Radiation |
| How do sound waves travel? | Energy transferred through the vibration of particles in a medium |
| What happens when electrical energy is changed to thermal energy? | An energy conversion takes place |
| Which of the following is a conversion from light energy to chemical energy? *Turning on a stove to heat dinner, *Turning on a lamp, *Growing an apple tree, *Making toast in a toaster | Answer - Growing an apple tree |
| A person runs 100m in a straight line in 20 seconds. What is their speed? | Answer - 5 m/s |
What are the inputs and the outputs to this image?,  | Electricity in- Light out |
What are the blue lines measuring?,  | Wavelength |
What are the lines with arrows measuring?,  | Amplitude |
What is this an image of?,  | Reflection |
What is this an image of?,  | Refraction |
Which image from above would be moving to the left?,  | A |
What is happening scientifically in this picture?,  | Unbalanced forces create movement |
The graph shows distance traveled during a bicycle race. Because the upward slope on the graph is straight and objects do not normally travel at a constant rate, what does it MOST likely represent?,  | Average speed |
This is a graph of a roller coaster car moving up a hill. What does the straight upward slope on the graph show?,  | Positive acceleration |
