ACT Science Prep

Front

A student wants to test the effects of type of exercise on heart rate. What would be a proper hypothesis?

Back

If type of exercise affects the heart rate of a person, then jumping jacks will increase the heart rate the most.

Front

A student wants to test the effects of type of exercise on heart rate. What would be a good experimental group? (Options: jumping jacks, push-ups, sit-ups, jogging in place, lunges)

Back

jumping jacks, push-ups, sit-ups, jogging in place, lunges

Front

What effects might the doubling of the cattle population in Texas have on the ecosystem?

Back

The cattle need more space or more grass.

Front

During an investigation, Rachel placed two spoons in a pan of water on a heated hot plate. One spoon was made of wood and the other was made of metal. After several minutes, the metal spoon became much hotter than the wooden spoon. This most likely happened because:

Back

Wood is a good insulator; metal is a good conductor.

Front

According to recent temperature trends in New York City, one might predict which temperature on day 7? Options: 59, 83, 67, 72

Back

72

Front

Jane is setting up an experiment involving bean plants. She places a bean inside a damp paper towel, then places it inside a Ziploc bag. She takes another bean but places it inside a dry paper towel. She tapes both Ziploc bags to her classroom window next to each other. She checks each day to observe and record the data. Jane is most likely investigating which hypothesis:

Back

A dry bean grows quicker than a damp bean.

Front

Which of these would cause pain in human ears?
Options: anything over 0 db, 160 db, 40 db, 118 db

Back

160 db

Front

This type of cell needs a cell wall and chloroplasts

Back

Plant cell

Front

The powerhouse of the cell is the...It converts energy from food into energy the cell can use

Back

Mitochondrion

Front

Which sentence is written correctly? Options: Since 1987, scientists have been suggesting we switch to cleaner fuel sources. Since 1987 scientists have been suggesting we switch to cleaner fuel sources. Since 1987, scientists have been suggesting we switch to cleaner, fuel sources. Since 1987 scientists have been suggesting we switch to cleaner, fuel sources.

Back

Since 1987, scientists have been suggesting we switch to cleaner fuel sources.