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G.E.D. Science Test Prepare Questions and Answers Graded A+ 2023
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G.E.D. Science Test Prepare
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G.E.D. Science Test Prepare.________ is done when force applied to an object moves the object : A.Transformation B.Biological Kindness
C.Conservation
D.Work - answer D.Work
A windmill is used to create electrical energy.
This change from one form of energy to another is called:
A. Energy transformation
B. Kinetic energy
C. Mechanical energy
D. Electrical energy - answer A. Energy transformation
I put a Pop-Tart in the toaster. Electrical energy is transformed to thermal energy to make my Pop-Tart hot. Based on the Law of Conservation of Energy, once my Pop-Tart
starts to cool, is energy lost?:
A. Yes. All the energy was used in the conversion of energy.
B. No. Energy cannot be created or destroyed.
C. Yes. The Pop-Tart is no longer hot.
D. No. Energy can be created, but it cannot be destroyed - answer B. No. Energy cannot be created or destroyed.
At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m)
A. 343 m/s2
B. 343 N
C. 340 J
D. 343 J - answer D. 343
What are the three phases or states of matter?:
A. Liquid, Gas, Ice
B. Liquid, Solid, Gas
C. Gas, liquid, Slippery
D. Liquid, Gas, hard - answer B. Liquid, Solid, Gas Iron+ Oxygen->Iron Oxide (Rust)
2Fe+30₂ -> Fe₂O₃
Iron Oxide, formed from Iron and Oxygen, is a new:
A. Element
B. Atom
C. Compound
D. Solution - answer C. Compound
A fish swims through the water by using its fins to push water backwards. Pushing water
backwards propels the fish forward through the water. This most nearly fits which of Newton's Laws?:
A. Newton's First Law: Force=mass(acceleration)
B. Newton's Second Law: objects in motion will stay in motion unless acted upon by a force, objects at rest will stay at rest unless acted upon by a force
C. Newton's Third Law: For every action, there is an equal and opposite reaction. - answer C. Newton's Third Law: For every action, there is an equal and opposite reaction.
Researchers want to conduct a study using random sampling. What is random sampling?
A. Individuals are randomly selected from the population. Every individual has the same
probability of being selected.
B. A control group is selected and every other individual is used for data.
C. The population is divided into subgroups. Each subgroup has several individuals that
are selected.
D. The population is divided into age groups and individuals are chosen at random from within those age groups. - answer A. Individuals are randomly selected from the population. Every individual has the same probability of being selected.
Which of the following depictions best represents evolution and why?
Formation of a mountain over time
A husky dog descended from a wolf
A. The formation of a mountain over time. The mountain changed and formed. It evolved.
B. The husky dog. The dog is the product of modifications of inheritance over time. - answer B. The husky dog. The dog is the product of modifications of inheritance over
time.
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