Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
FinalExam-Grade7
DDMS 7th grade, Final Exam Review
| Question | Answer |
|---|---|
| How does altitude affect air pressure? | As altitude increases, pressure decreases |
| How does the temperature of a substance affect its density? | As temperature increases, the density will decrease |
| What types of fronts will bring the most severe weather? | Cold Fronts |
| What type of weather is associated with a high pressure system? | Clear, Fair Weather |
| What do red semi-circles on a weather map indicate? | Warm Front |
| What type of weather occurs after a warm front passes? | Low pressure system, warm humid weather, cloudy & rainy |
| What causes wind? | differences in air pressure; air moves from areas of high pressure to low pressure |
| Which microorganism lives alone, moves using a flagellum, and is capable of making its own food? | Euglena |
| Which microorganism lives in colonies, and is capable of photosynthesis? | Volvox |
| Which microorganism can produce sexually or asexually, is a heterotroph, and moves using cilia? | Paramecium |
| Which microorganism reshapes its body to move using it’s pseudopod, and engulfs other organisms by phagocytosis? | Amoeba |
| What are the major differences between plant and animal cells? | Plant cells have a cell wall & chloroplasts, and animal cells do not |
| What is the function of a chloroplast in a plant cell? | Allow plants to perform photosynthesis & make their own food |
| What is the function of the mitochondria in a cell? | Use food to create energy for the cell |
| What is the function of the nucleus in a cell? | Controls & coordinates all the cell’s activities |
| How are multi-cellular organisms organized? | CellsTissuesOrgansOrgan Systems |
| What are the three functions of the skeletal system? | Create red & white blood cells, support the body, & protect vital organs/nerves |
| What is the main function of the respiratory system? | To bring oxygen into the body, and expel carbon dioxide |
| Which body system breaks down food into nutrients that we are able to use? | Digestive |
| What type of energy transformation takes place when an object falls toward the ground? | Potential energy is changed into kinetic energy |
| What type of energy transformation takes place when a plant performs photosynthesis? | Light energy (sun) is changed to chemical energy (stored food) |
| If you are going down a hill on your skateboard, when do you have the greatest potential & kinetic energy? | greatest potential = top of the hill, greatest kinetic = bottom of the hill |
| What is the difference between a parallel & a series circuit? | A parallel circuit will continue to provide power to the other bulbs, even if one is disconnected. |
| Why are simple machines helpful? | They provide a mechanical advantage; they make the work easier |
| How do simple machines provide a mechanical advantage? | They spread the effort required over a greater distance, which allows you to use less force |
| Which of Newton’s Laws of Motion explains why we wear seatbelts? | 1st law; an object in motion tends to stay in motion |
| If you create a graph that displays distance & time, what does the line on the graph represent? | The speed of the object |
| What is represented by a straight line on a distance vs time graph? | Constant speed |
| What is represented by a curved line on a distance vs time graph? | positive or negative acceleration |
| How is velocity different from speed? | Velocity is speed in a given direction |
| How can a reference point be used?; give an example of a good reference point | To tell if another object is changing position, or moving; a good reference point could be any stationary object that is easily identifiable |
| What is represented by a straight line on a speed vs time graph? | constant acceleration |
| What does it mean if an object is not accelerating? | It is moving at a constant speed, or it is not moving at all |
| Which of Newton's Laws of Motion explains why a rocket moves upward as the engine thrusts downward? | 3rd Law; For every action there is an equal & opposite reaction |
| Which of Newton's Laws of Motion explains why it is harder to move a bowling ball than a soccer ball? | 2nd Law; Fore = Mass x Acceleration |
Created by:
jfakins
Popular Science sets