General science 3 Flashcards
The moon completes a revolution around earth approximately every?
28 days
Carcinogens are chemicals that cause?
Gene mutations (can cause cancer)
A paramecium is?
One celled organism
What substance is essential for the function of the thyroid gland?
Iodine
The brain stem controls?
Some involuntary activities
What element is the most abundant one in the atmosphere?
Nitrogen
Minerals are necessary for?
Metabolic function
What’s the only metallic element found as a liquid at room temperature?
Mercury
Which of the following is in a type of telescope?
A. Reflecting.
B. Convexing
C. Refracting.
D. Catadioptric
B
A dekagram?
Is smaller than a kilogram
The aurora borealis can be seen only in the?
A. Winter.
B. Summer
C. Southern hemisphere.
D. Northern hemisphere.
Northern hemisphere
The three important properties of sound waves are?
Wavelength, frequency, and speed
Between which two planets can most of the asteroids and the solar system be found?
A. Mars in Jupiter.
B. Saturn and Jupiter.
C. Earth and Mars.
D. Mercury and Venus.
A. Mars and Jupiter.
At room temperature, an element can be a?
Solid, liquid, or gas
The elements hydrogen and helium comprise, what percentage of almost all matter in the universe?
98%
Compounds are created when?
Atoms of two or more different elements are combined
What theory suggests the universe will come to an end when it’s ever increasing rate of expansion causes all matter to fly apart?
The big rip
Which of the following planets, known as gas giant, has no rings?
A. Neptune.
B. Jupiter.
C. Uranus.
D. They all have rings.
D
A watt-hour measures
The amount of work performed or generated
Gas particles move?
More quickly than liquid particles
Absolute zero is?
-273 degrees Celsius. (The same as 0 Kelvin’s)
Radiology is employed when doing which of the following?
Using a magnetic resonance imaging machine (MRI)
Which of the following statements is not true?
A. The human female chin is usually more rounded or pointed than the human male chin.
B. The human female pelvis is usually narrower than the human male pelvis
C. The human male skull is usually larger than the human female skull
D. The human male skull has a larger brow ridge than the human female skull.
B
A lunar eclipse occurs when?
The moon moves into the earths shadow
