GED Science 3

Question 1

During which type of nuclear reaction is energy released by combining light atomic nuclei?

Accepted Answer

Nuclear fusion

Answer

Nuclear fission

Answer

Radioactive decay

Answer

Chemical combustion

Question 2

What is the relationship between wavelength and frequency of an electromagnetic wave?

Accepted Answer

They are inversely proportional — as wavelength increases, frequency decreases

Answer

They are directly proportional — as wavelength increases, frequency increases

Answer

Wavelength and frequency are independent of each other

Answer

Both increase together as the wave's energy increases

Question 3

Which describes what happens when a substance changes from liquid to gas without going through the boiling point?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Answer

Freezing

Question 4

In an electric circuit, what is the relationship between voltage (V), current (I), and resistance (R) according to Ohm's Law?

Accepted Answer

V = IR

Answer

V = I/R

Answer

I = VR

Answer

R = VI

Question 5

Which of the following correctly identifies a balanced chemical equation?

Accepted Answer

2H₂ + O₂ → 2H₂O

Answer

H₂ + O₂ → H₂O

Answer

H₂ + 2O₂ → H₂O₂

Answer

H₂O → H₂ + O

Question 6

What is the difference between speed and velocity?

Accepted Answer

Velocity includes direction, while speed does not

Answer

Speed is faster than velocity in all cases

Answer

Speed is measured in meters; velocity is measured in meters per second

Answer

There is no difference — they are the same quantity