Nature of Science-8th Grade

If a hypothesis is NOT supported by the data, the hypothesis ______.

• is still valuable- if it leads to further investigation

• is incorrect and therefore, is NOT valuable

• is faulty and must be discarded immediately

• should be placed on a WALL OF SHAME

A student conducts an experiment to find out if the amount of light a plant receives affects its growth. One plant is placed under a dim light and another plant is placed under a bright light.

Which would be the BEST hypothesis for this experiment?

• If plants are placed in direct sunlight, then they will grow more green leaves.

• If plants are places in bright light, then they will grow more green leaves than in dim light.

• If plants are place in clay pots, then they will grow more green leaves than plastic pots.

• If plants are placed under bright light, then the temperature of the plants will increase.

Marcia conducted an experiment to find out whether Bounty paper towels absorb more water than Brawny paper towels. According to her results, Bounty paper towels absorbed two times more water than Brawny paper towels. She gave her notes to Alex, who performed the same experiment and obtained similar results.

Which term BEST describes Alex's experiment?

• plagiarism

• replication

• pseudoscience

• repetition

Fred and Barney were given an assignment to go to a school basket ball game and write down everything they saw, heard, smelled and touched. Afterwards, the two students had to compare their findings and write up a summary of their combined data.

Identify the type of scientific method that Fred and Barney used to complete the assignment.

• propose a hypothesis

• make an inference

• record observations

• conduct an experiment

• draw a conclusion

Cindy placed three beehives with the same mass into separate (but identical) glass containers. Hive A was kept at 100˚F, Hive B was kept at 0˚F, and Hive C was kept at room temperature (75˚F ) For the next month, she measured the amount of honey each hive produced. Hive C produced more honey than the other two hives.

What is the test (INDEPENDENT) variable in Cindy's experiment?

• the temperature of each hive

• the number of hives

• the mass of each hive

• the amount of honey produced

Tags

NGSS.MS-PS1-4

The picture above shows a microscopic view of cork tissue, which Robert Hooke used to identify the first cell in 1665. How did Hooke's discovery eventually lead to the modern cell theory?

• All scientists agreed that Hooke's ideas about cells were accurate, so the cell theory did NOT need to be modified over time.

• All scientists were skeptical of Hooke's discovery and rejected the idea that living things are made of cells.

• The scientific community took Hooke to a court of law and a judge ruled in favor of the modern cell theory.

• Many scientists performed studies that tested and built upon Hooke's work, eventually forming a unified understanding of cells.

Scientists need to know how gravity acts on a space shuttle so they can put the space shuttle into orbit. They use a mathematical equation that describes what happens to objects when acted upon by gravity under certain conditions.

Which term describes this equation?

• scientific law

• scientific theory

• pseudoscience

• bias opinion

Which one of the following factors does a scientist measure and record once an experiment is in progress?

• Test (independent) variable

• Outcome (dependent) Variable

• Constants

• Control group

A biologist wants to know more about the sea turtles that lay eggs on Flagler Beach. He visits the beach every Saturday morning for 6 months and writes down everything he sees near a sea turtle nest . The biologist is careful to NOT touch the nest.

What type of investigation did the biologist conduct?

• controlled experiment

• field study

• internet research

• interview

Which one of the following is NOT regarded as pseudoscience?

• an astrologist who writes horoscopes

• a seismologist who studies earthquakes

• a company selling a product that sounds to good to be true

• a broken mirror that brings 7 years of bad luck