What rays are magnetic waves in our galaxy trapping?
A. Alpha rays
B. Gamma rays
C. Cosmic rays
D. None of these
Humans can detect sounds between __ and __ Hertz (Hz).
A. 10 Hz to 10,000 Hz.
B. 20 Hz to 20,000 Hz.
C. 30 Hz to 30,000 Hz.
D. 40 Hz to 40,000 Hz.
What device measures pressure?
A. Barometer
B. Voltmeter
C. Lactometer
D. Ammeter
What substance is the toughest of the following?
A. Copper
B. Diamond
C. Iron
D. Silicon
The Sun’s orbital period around the galactic nucleus is how long?
A. 150 million years
B. 250 million years
C. 300 million years
D. 350 million years
The majority of primary cosmic rays are made up of very rapid particles.
A. Protons
B. Neutrons
C. Electrons
D. Gamma rays
The majority of the sun’s energy is produced by what?
A. Nuclear fusion
B. nuclear fission
C. Burning hydrogen
D. None of these
How many chambers does a frog heart have?
A. 2
B. 3
C. 4
D. 5
What do you mean when you say an illness has “insomnia”?
A. Color blindness
B. Depression
C. Hypertension
D. Inability to sleep
How many moons is there on Uranus?
A. 15
B. 12
C. 27
D. 45