Which is the best description of the dependent variable?

the variable that is changed by the scientist

the variable that does not change

Which of the following should be a goal of a scientific investigation?

to help the scientist solve a problem

to help the scientist make money

to make sure the scientist is correct

Rigoberto writes down his hypothesis that more salt will dissolve in cold water than in warm water. He adds salt to different temperatures of water and records his observations including the amount of undissolved salt. He finds that there is more salt dissolved in warm water than cold water. What should Rigoberto do next to make sure that his conclusion is valid?

repeat his investigation to see if his results are the same

do another investigation with sugar

repeat his investigation using a different liquid than water

change his results to match his original hypothesis

Which question would be best to answer using a scientific investigation?

Does temperature affect the amount of rain?

Why are people afraid during thunderstorms?

Are some clouds prettier than others?

Scientists who study hurricanes sometimes fly into the hurricanes to take readings from inside the storm. How does this differ from most scientific research?

Hurricane scientists cannot control variables.

Hurricane scientists cannot collect data.

Hurricane scientists cannot draw conclusions.

Hurricane scientists cannot make hypotheses.

A group of people trained to climb a mountain. As they practices in high altitudes, a researcher measured changes in their lung strength. Why is it important that her study has a control group?

to compare typical lung strength with the effects of training

O to ensure that everyone in the group was strong enough to climb a mountain

to test equipment for measuring lung strength

to share her research with as many people as possible

Austin is studying states of matter by heating water in a pan. Which statement from his notebook is an observation?

Tiny bubbles form on the bottom of the pan.

It is hard to estimate the size of the bubbles.

The bottom of the pan must be very hot.

I think there is air in the bubbles.

A scientist says that she has made an important discovery about sound waves. What needs to happen for most other scientists to accept her results?

Other scientists need to be able to get the same results.

The scientist has to explain her results to other scientists.

Many scientists need to review the results.

The scientist needs to publish her results in a journals.

Jaylynn says a baseball and a basketball will fall at the same speed. Her friend disagrees. Which of these is the best way for them to find out?

drop both balls from a high place and compare how fast they fall

ask an adult which one is right

explain their reasons to each other

ask twenty different people on the playgroup what they think

Alejandro wanted to find out which of his friends was the strongest. He asked each of his friends to come to his lab three different times and lift some weights. Alejandro wrote down how much weight each person could lift. How was his investigation different from an experiment?

Alejandro did not test a hypothesis

Alejandro did not make any observations

Alejandro did not repeat his tests.

Alejandro did not collect any data.

Amanda makes the following hypothesis: If the humidity increases, it will help plants grow. Which of these describes a controlled experiment that would best help Amanda prove or disprove her hypothesis?

observing plant growth in a greenhouse with a constant humidity and in a greenhouse with changing humidity

recording the number of tall plants and short plants in different fields that have different humidity levels

O measuring the temperatures and humidity in a greenhouse that has both short and tall plants growing in it

O making a model to observe whether water collects on the walls of a greenhouse with increasing humidity

What would be the best way to collect data on the average age of a large population?

check newspapers for birth announcements

estimate ages by looking at large groups of people

1. Why is it important to have a control in an investigation?

Controls are used to show that different results are caused by changing the variable.

Without controls, it is not possible to make a hypothesis.

Controls are the answer to the investigative question.

A valid scientific investigation must be able to be

replicated (which means repeated)

Which would be the best source of information for a scientist?

an article in a science journal

A scientist tested an exercise machine. He had two groups of volunteers. Group A exercised every day for a month. Group B did not exercise. He made the table below to compare their muscle strength over 30 days. What is Group B’s role in the scientist’s investigation?

Group B's role is the control group.

Group B's role is the variable.

Why was Group B’s role important to the investigation?

It is important so you have something to compare your test results to.

It is important because a scientist must have control.

Jonathan and Renier dropped a rubber ball from the same height onto six different surfaces. They measured the height of each bounce and recorded their data. The graph shows their data. Based on the data, which of the following is the best conclusion?

A rubber ball bounces higher on harder surfaces.

All balls bounce higher indoors than they do outdoors.

The surface has no affect on the height of the bounce.

A rubber ball does not bounce as high as a super ball.

Nature of Science

Authored by C. Ferguson

Science

4th - 5th Grade

NGSS covered

Used 20+ times

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34 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Using one or more of your senses to gather information is called

Inferring

Observing

Predicting

Hypothesizing

An educated guess or testable prediction is a

theory

law

hypothesis

conclusion

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The amount of space occupied by an object is its ________________.

length

volume

mass

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Observations that deal with a number or amount are called

qualitative

quantitative

The Skittles are yellow, red and green is an example of _____.

qualitative observations

quantitative observations

hypothesis

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The statement that correctly lists the steps of the scientific method in order is ______

conclusion- research-hypothesis-ask a question

ask a question-hypothesis- experiment-collect data and analyze

conclusion-hypothesis-research-experiment

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The part of an experiment that doesn't change is a _____.

control

constant

conclusion

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Nature of Science

Using one or more of your senses to gather information is called

An educated guess or testable prediction is a

The amount of space occupied by an object is its ________________.

Observations that deal with a number or amount are called

The Skittles are yellow, red and green is an example of _____.

The statement that correctly lists the steps of the scientific method in order is ______

The part of an experiment that doesn't change is a _____.

The steps commonly used by scientists in gathering information to test hypotheses and solve problems are called _____.

The variable that is changed by the scientist to test a hypothesis is called the _________________________ .

The _________________________ is the base metric unit of mass.

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