ASVAB General Science Practice Test 789630 Results

Your Results Global Average
Questions 5 5
Correct 0 2.92
Score 0% 58%

Review

1

Which of the following states of matter exists at the highest temperature?

68% Answer Correctly

gas

none of these

liquid

solid
Solution

Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.

2

pH is a scale that measures of how basic or acidic a solution is. A solution with a pH of 4 is:

71% Answer Correctly

alkaline

neutral

basic

acidic
Solution

An acid is a substance that gives up positively charged hydrogen ions (H+) when dissolved in water. A base (alkaline) gives up negatively charged hydroxide ions (OH-) when dissolved in water. pH is a scale that measures of how basic or acidic a solution is. Numbered from 0 to 14, solutions with a pH of 7 are neutral, less than 7 are acidic, more than 7 are alkaline.

3

Which of the following is not true of light waves?

62% Answer Correctly

are mechanical waves

are electromagnetic waves

travel faster than sound waves

can travel through a vacuum
Solution

Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.

4

Which of the following is true about species groups?

46% Answer Correctly

a community is made up of a group of populations

a biome is a made up of a group of biospheres

a population is made up of a group of communities

an ecosystem is a biological population
Solution

A population is a group of organisms of the same species who live in the same area at the same time. A community is a group of populations living and interacting with each other in an area.

5

In the foood chain, producers serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through:

47% Answer Correctly

chemosynthesis

decomposition

photosynthesis

autotrophs
Solution

Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis