GED Science Test #8

Question 1

Because of this, ice floats on water.

Accepted Answer

ice is less dense than water

Answer

Floating objects have a lower density than the substance in which they float.

Question 2

Two spheres that are negatively charged

Accepted Answer

repel each other.

Answer

Two charges that are similar repel each other.

Question 3

Which of the following statements regarding gravity is false?

Accepted Answer

The gravitational force between two objects depends only on the mass of the larger object.

Answer

The assertion is incorrect because the gravitational force between two objects is proportional to their masses. The rest of the claims are correct and follow Newton's Law of Gravitation.

Question 4

Which two liquids have the potential to form an acid-base reaction?

Accepted Answer

Bleach and vinegar

Answer

It's the unique liquid combination where one is acidic (vinegar—pH 3) and the other is basic (bleach—pH 9).

Question 5

When a process is exothermic, heat is expelled into the environment. Burning wood is an example of an exothermic process. An endothermic process necessitates the use of heat from the environment. Boiling water is an example of an endothermic reaction. Which of the following is an example of an endothermic reaction?

Accepted Answer

Mmelting ice

Answer

An endothermic reaction necessitates the addition of heat energy. Melting ice (ice melts when heated) is the only one that requires an energy input (heat). The rest of the processes listed are exothermic, meaning they produce heat.

GED Practice Test

GED Practice Test

GED Science Test #8