astronomy

posted by .

2. We ultimately want to find the amount of solar energy that hits the observer on the planet. Energy is usually measured in Joules, but there are other appropriate units of energy as well; kilowatt-hours for example, are used to measure the amount of electrical energy that we consume from the power company. For the purposes of this lab, we will invent a convenient unit which we will call the "sunlight-hour". This will be the fraction of direct (perpendicular) sunlight times the number of daylight hours. The amount of perpendicular sunlight is found by considering the angle that the sun strikes the surface. The number of daylight hours we will find using the simulation. Thus,
sunlight-hours = (angle factor)*(hours of daylight)

We will use this formula a lot for this lab (beginning with question 4).

To start off, let us look at the effect of the angle that the sunlight strikes the surface of the planet. We want to be able to quantify the fraction of light that hits perpendicular to the surface.

First, set the tilt of the planet to be 45 degrees and wait until the planet is near the winter solstice (on the far right). Here the sunlight comes in parallel to the surface.

When the light arrives parallel to the surface, what percentage of that light is perpendicular to the surface?

(Points : 2)
0%
30%
50%
100%

  • astronomy -

    Zero percent

  • astronomy -

    30%

  • astronomy -

    0%

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    How do you convert energy into to joules (can you please give me an example with showing me your i.e how you did it, in full detail) How do you find specific heat numbers?
  2. Biology Photo efficency

    How do you calculate the photosynthetic efficiency ..the % of solar energy reaching vegetation in an ecosystem that is converted to GPP ?
  3. biology

    What are two units of measure for the energy obtained from macronutrients?
  4. Science

    Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
  5. SCIENCE PLZZ HELP

    Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
  6. physics please help

    one kilwatt/hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied fr a time of one hour. a kilowatt/hour is the unit of energy used by power companies when figuring your electric bill. determine …
  7. Physics

    One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. A kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. Determine …
  8. physics

    In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic …
  9. science

    how should each form of energy be identified?
  10. Science

    Which of the following is a problem with using solar power as a main source of energy?

More Similar Questions