Fact 1: Carbon cycles quickly between organisms and the atmosphere. Fact 2: Atmosphere is the blanket of air around the earth. Given the two facts above, carbon cycles quickly between organisms and?
OPTIONS:
- O2
- DNA
- comets
- air
- Aves
- ocean
- satellites
- lung
air
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Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Muscles in the upper arm called biceps are used to flex the arm. Given the two facts above, what contracts when fibers get shorter?
OPTIONS:
- strength
- strong
- h2o
- bushes
- density
- wheat
- firm hugs
- biceps
biceps
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Fact 1: Ablack hole is formed by a high-mass star collapses. Fact 2: Bigger mass means smaller star. Given the two facts above, a black hole is formed by a what diameter star?
OPTIONS:
- heat
- matter
- size
- small
- dead
- nucleus
- burning
- deadly
small
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Fact 1: The mass of an object causes the gravitational force exerted by that object. Fact 2: Gravitation is a universal force of attraction acting between all matter. Given the two facts above, what causes the amount of attraction exerted by an object?
OPTIONS:
- mass
- motion
- motors
- heat
- energy
- wind
- fibers
- fields
mass
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