5 Written questions
5 Matching questions
- According to modern atomic theory, light emitted by atoms originates from
- Which of the following is a critical component of the scientific method?
- Are the constellations seasonal?
- What is the half-life of a sample of matter containing radioactive element?
- In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to latitude?
- a declination
- b time needed for half the radioactive atoms in the sample to decay.
- c testing of prediction from a scientific theory or theoretical model.
- d transitions of electrons between electron levels of the same atom.
- e Yes, On a summer night many of the constellation you can see are different from the constellations you can see on a winter night. But there are some constellations you can see all year long.
5 Multiple choice questions
- visible light, UV radiation, X rays, gamma rays
- Solar spectra show absorption in spectral lines that are characteristic of iron and are unique to it.
- are 88 in number and cover the entire sky.
- rotation of Earth on it axis.
- number of protons in the atomic nucleus and hence its positive charge.
5 True/False questions
The declination of a star in the sky is defined as the angle between the → absorbs all radiation that falls on it.
The term retrograde motion from a planet refers to the → Sun-centered, with the planets moving in perfect circles around the Sun.
Kepler's first law states that a planet moves around the Sun in a(n) → elliptical orbit, with the Sun at one focus.
Why was adaptive optics developed? → to compensate for image distortion caused by the Earth's atmosphere.
One light-year is the → bending of light as it enters a dense but transparent material at an angle to the perpendicular to the surface of the material.