Phd Science

In science, we often gather information with our senses by watching, listening, smelling, and touching. For example, you may record how the color of a flower changes. What is this process called?

• stating hypotheses

• forming conclusions

• making observations

• performing experiments

Tags

NGSS.MS-LS1-8

Which of the following would be good scientific evidence to go against a doctor's claim that drinking milk in the morning would give students energy?

• a brochure from the doctor stating the benefits of milk

• data from scientific investigations about drinking milk in the morning

• a TV advertisement that says that drinking milk in the morning gives people plenty of energy

• statements from five people about how drinking milk in the morning gives them energy

Which of the following is an experiment in which a person can control a variable?

• Observe the behavior of ants around an anthill.

• Tell whether it rained every Wednesday for an entire month.

• Count the number of insects in a piece of ground measuring 1m square.

• Determine whether plants grow better in full sunshine or partial sunlight.

What observations must a scientist make to collect evidence to support his idea or theory that the size of an insect population depends on the temperature?

• Observe the population only in winter.

• Observe the population in a laboratory.

• Observe the insect population in different areas.

• Observe the population throughout the year.

Tags

NGSS.MS-LS1-5

Which way of gathering information do only scientists use?

• reading

• observing

• recording

• experimenting

What is the first step that a scientist should take in an experiment?

• asking a question

• collecting evidence

• drawing a conclusion

• developing an explanation

Why it is important for scientists to communicate their results by publishing their work?

• to learn from each other

• to keep their work secret

• to compete with other scientists

• so the experiments are not repeated

Which measurement tool is used to measure the volume of a material?

• measuring cup

• spring scale

• balance

• thermometer

Which of the following is always an important part of an experiment?

• making a working model

• observing things in nature

• making drawings of things observed

• identifying and controlling variables

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Which of these is metric unit for measuring mass?

• kilogram

• liter

• millimeter

• pound