Planets 1
If the distance between planets increases the force of gravity will:
decrease
Find keplers constant for a planet with an orbital radius of 3.5 and a time period of 3:
.21
People believed light was a wave because______.
It would diffract, refract, and have interference patterns. All wave properties.
Most radiation comes from__________?
Natural sources.
What is a good experimental question for a planets orbit?
How does increasing the ______ affect the _____ of a planets orbit?
38N
Find Keplers constant for a planet with R= 2.5 x 10 2 km and T = 6 x 10 4 s.
230 s2/km3
What experiment caused people to believe light could be a particle?
The photoelectric effect.
What is the least harmful type of radiation? Why?
Neutrinos. They have small amounts of energy.
What is a good experimental question for the photoelectric effect?
How does increasing the ______ affect the _____ of the photoelectric effect?
What is the shape of planet orbits?
ellipse
If Keplers constant is 35 and the radius of orbit is 4, how much is the planets time period?
47
Describe the photoelectric effect:
Light can be absorbed by metal and then emit electrons under certain circumstances.
What is the most harmful type of radiation? Why?
Gamma rays. They have more energy.
What is a good hypothesis you could make for a planets orbit?
IF ________________, Then __________.
If all the shaded areas are the same, during which area does the planet take the most time?
same
If keplers constant is 55 and the time period is 30, how much is the radius of orbit?
2.5
Is light a particle or a wave? Explain.
Both. It will behave as one or the other depending on the experiment.
We tolerate small doses of radiation because____.
Cell can heal.
What is a good hypothesis you could make for the photelectric effect?
IF _____________, Then __________.
If all the areas are the same, during which area does the planet move the fastest?
The one with the most distance in its arc
If the force between two planets of mass 4000 kg and 6000 kg is .03N, how far apart are they?
.23
As they are heated, what color do warmed object glow first?
Red
Is radiation a wave or a particle? Explain.
Both. It has properties like light, but often it is invisible.
If you make a scientific graph, what goes on the x axis even if Mr Hewes is no where to be found?
The independent variable.