Skill Builder Practice Quiz 3

Riya suffers from acidity in her stomach. Which of these could the medicine prescribed contain?

• A) Soda

• B) Magnesium Hydroxide

• C) Hydrochloric Acid

• D) Sodium Chloride

The presence of specific features or behavior that enable an organism to live in its surroundings is called adaptation. Which of the following is NOT an example of biological adaptation?

• A) Birds migrate in flocks to warmer regions which protects them from the winter cold

• B) People have a tendency to couch which helps them clear congestion in the windpipe

• C) Giraffes develop long necks which help them eat the leaves of tall trees

• D) People who play the drums have strong arms which help them play

It is recommended to eat an orange as a whole rather than having it juice because: -

• A) The whole orange contains more types of vitamins than the juice

• B) The whole orange contains more fiber that acts as roughage

• C) Eating the whole orange is convenient and saves time

• D) The whole orange contains more minerals than the juice

Controlled experiments include variables. Which statement describes the difference between an independent variable and a dependent variable?

• A) The dependent variable does not change and the independent variable does change

• B) The independent variable does not change

• C) The dependent variable is the control and the independent variable is the result

• D) The independent variable is what you are testing and the dependent variable is the result of the change

As thermal energy is added to a substance, which of the following changes can be predicted?

• A) Spacing between particles will decrease

• B) Temperature of the substance will decrease

• C) Vibration of the individual particles will increase

• D) The pressure of the substance will increase

Keerthana takes a spoonful sugar and dissolves it in pure water in flask 1. Next, she prepares a salt solution in flask 2. She tastes a spoon of the contents of flask 2. She connects flask 1 to flask 2 by a tube and begins heating flask 1. She allows the vapors coming from flask 1 to condense into the contents of flask 2. After several minutes she tastes a spoon of the contents of flask 2. She will get_______________

• A) A less salty taste

• B) A less sweet taste

• C) A mix of salty and sweet taste

• D) No taste at all, like pure water