GED Science Test #9 3

Question 1

Which statement best describes the difference between a food chain and a food web?

Accepted Answer

A food chain shows one path of energy flow, while a food web shows multiple interconnected paths

Answer

A food web only includes animals, while a food chain includes all organisms

Answer

A food chain shows all relationships in an ecosystem, while a food web shows one

Answer

There is no difference — they are the same concept

Question 2

The element with atomic number 6 is carbon. How many electrons does a neutral carbon atom have?

Accepted Answer

6

Answer

12

Answer

3

Answer

8

Question 3

Scientists have found similar fossilized organisms on continents that are now separated by oceans. This evidence supports the theory of:

Accepted Answer

Continental drift (plate tectonics)

Answer

Natural selection

Answer

The Big Bang

Answer

Spontaneous generation

Question 4

Which type of electromagnetic radiation has the highest frequency?

Accepted Answer

Gamma rays

Answer

X-rays

Answer

Ultraviolet light

Answer

Microwaves

Question 5

When a ball is thrown upward, at the highest point, the ball's:

Accepted Answer

Velocity is zero but acceleration due to gravity continues downward

Answer

Velocity and acceleration are both zero

Answer

Velocity is maximum and acceleration is zero

Answer

Both velocity and acceleration are directed upward

Question 6

The nervous system transmits signals using specialized cells called:

Accepted Answer

Neurons

Answer

Nephrons

Answer

Nuclei

Answer

Nodules