Froggy Jumps
Science questions on experiments and motion.
1
What is a controlled experiment?
2
How does a “control group” differ from an “experimental group” in an experiment?
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How does an “independent” variable differ from a “dependent” variable?
4
In a well-designed experiment, how many independent variables should be tested?
5
Why do scientists do multiple trials in an experiment?
6
Explain how constants validate your results.
7
Create a hypothesis, identify a control and list 3 constants. Use the following information. IV - type of water, DV - plant height
8
Label which axis represents the independent variable and which represents the dependent variable.
9
What is the difference between observation, inference, and fact? Give examples
10
Which color bird feeder do Cardinals prefer? Identify IV, DV, control and constants.
11
Write and explain the three laws of motion. Who is the scientist that created the three laws of motion?
12
The second law of motion can be written in a mathematical expression. Write it out and explain the relationships.
13
If the acceleration is constant, what happens to force if you increase the mass?
14
If the mass is constant, what happens to force if you decrease acceleration?
15
A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount of force acted on the ball?
16
To get out of your chair to leave class, your feet push on the floor, what is the reaction?
17
When you push against a wall does it push against you? Try standing on roller skates! Explain.
18
If you have to move a huge elephant and get it to move fast, what does the second law suggest you do to speed up the elephant?
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29. The graph on the right shows the motion of a model train. What is the speed of the train in m/s between points B and C?
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31. Which of the following best represents stored potential energy?
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32. What is the relationship between inertia and mass?
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33. A. How does speed differ from velocity? Draw a distance time graph showing two objects moving at different speeds. Which line represents the slower moving object?
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34. From the Graph below: Write a narrative that explains how the moving object’s velocity changes over time. Use the terms: acceleration, negative acceleration (deceleration), constant velocity, time.
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37. Distance/Displacement The total distance from West gate to East gate is 100 meters. Alan walked from West gate to East gate. Eva walked from West gate to East gate and back to West gate. Who walked the farthest distance?
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38. Explain thoroughly the difference between speed, velocity and acceleration. What are examples of units for each?
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39. The standard unit of measurement for mass is grams while the unit for weight is Newtons. Explain why there is a difference between the two.
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41. Define the following terms: wave, crest, trough, amplitude, wave height, frequency and wavelength
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45. Electromagnetic waves can move through empty space, but mechanical waves, such as sound waves, cannot. Why is this?
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47. Explain which type of matter sound travels fastest through. Why? What is needed for a sound wave to travel?
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51. Using the electromagnetic spectrum above, describe radio waves and gamma waves in terms of their wavelengths, wave energy, and frequency.
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54. What is a light year and why are light years used in space?
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55. Argue why the study of Astronomy is also considered History?
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56. Given: Star X is 400 LY away. Light year is about 6,000,000,000,000 miles (six trillion) How long does it take for the light to reach Earth?
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57. Describe the life cycle of the Sun (a low mass star). Start with nebula and go through red giant.
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58. Describe the life cycle of a high mass star. Start with a nebula and go through black hole/neutron star.
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