Which white blood cells are the largest?
A. lymphocytes
B. eosinophils
C. basophils
D. monocytes
What apparatus measures atmospheric pressure, temperature, and humidity at different altitudes?
A. Barograph
B. Radiosonde
C. Aneroid barometer
D. Altimeter
The moon’s phases are partially caused by the___________?
A. Changes in shape of moon
B. Revolution of moon around earth
C. Variations in moon’s gravitation
D. Variations in speed of rotation of moon
The term “black holes” relates to what?
A. Holes occurring in heavenly bodies
B. Bright spots on the sun
C. Collapsing object of high density
D. Collapsing object of low density
What constellations are known as the zodiac?
A. An Imaginary regions that encompass the path of planets
B. Signs of Roman gods
C. A group of stars
D. None of these
Who was the first to calculate the radius of the earth?
A. Galileo
B. Copernicus
C. Ptolemy
D. Eratosthenes
Which star is the closest to our sun?
A. Proxima Centurai
B. Alpha Scorpii
C. Beta Orionis
D. Vega
When does a lunar eclipse occur?
A. Moon is b/w earth & sun
B. Earth is b/w sun & moon
C. Sun is b/w earth & moon
D. Earth is at right angles to direction of sun & moon
The primary color of a rainbow is
A. Blue
B. Green
C. Red
D. Indigo
Who created the bulb?
A. Philips
B. Robert
C. Edison
D. William