UIL Science practice 1 (25 simple questions)

Front

What is anaphylaxis?

Back

A serious allergic reaction that can cause constriction of the airways, hives, itching, weak and rapid pulse, and can be life-threatening.

Front

What makes a statement scientific?

Back

A scientific statement should be testable and reproducible.

Front

What can scientists learn about the Earth's atmosphere?

Back

Scientists can learn about the history of the Earth's atmosphere by studying Greenland ice cores.

Front

Which type of electromagnetic radiation has the shortest wavelength?

Back

Gamma rays have the shortest wavelength.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Fe (iron) is not a compound.

Front

What is the definition of a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is the role of a control in an experiment?

Back

A control is a standard of comparison for checking the results of an experiment.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the function of chlorophyll in plants?

Back

Chlorophyll is a pigment that allows plants to absorb light energy for photosynthesis.