ACT Science practice

Front

What is the recommended approach to guessing on the ACT test?

Back

Guessing on the ACT test is strongly discouraged.

Front

What does the term 'indication' refer to?

Back

The act of pointing out or pointing to something.

Front

What hypothesis best explains why System Z has a deeper primary minimum than System X?

Back

There is a more extreme difference between the magnitudes of the two stars in System Z than between the magnitudes of the two stars in System X.

Front

What sound level in decibels (dB) is likely to cause pain in human ears?

Back

160 dB.

Front

What is an inverse relationship?

Back

The connection between two variables that shows the opposite effect (when the value of one increases, the value of the other decreases).

Front

What is the definition of a hypothesis in scientific research?

Back

A hypothesis is a proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What is the significance of the orbital period in binary star systems?

Back

The orbital period can affect the observed brightness and depth of minima in light curves.

Front

What is the difference between direct and inverse relationships?

Back

In a direct relationship, both variables increase or decrease together; in an inverse relationship, one variable increases while the other decreases.

Front

What is the purpose of the ACT Science section?

Back

To assess students' scientific reasoning skills and their ability to interpret data.

Front

What is the meaning of 'illicit'?

Back

Something that is forbidden by law, rules, or custom.