TCI Science

You can share the results of an investigation with others by using a

• bar graph

• experiment

• variable

• hypothesis

An observation often leads to a testable statement known as a

• experiment

• hypothesis

• variable

• empirical evidence

A planned study meant to answer a question is called an

• variable

• experiment

• hypothesis

• bar graph

Tags

NGSS.MS-PS2-2

In an investigation, it is very important to test only one

• variable

• experiment

• hypothesis

• bar graph

Tags

NGSS.MS-PS2-2

A hypothesis should be supported by

• hypothesis

• bar graph

• empirical evidence

• variable

Tags

NGSS.MS-PS1-2

Sam's friend says that smaller dogs always have higher pitched barks. What is an observational test that Sam could carry out in order to critique his friends explanation?

• listen to barking from a wide variety of dogs

• listen to barking from several small dogs

• listen to barking from several large dogs

• listen to barking from a large and a small dog

Which of the following explains how observed data differs from measured data?

• you use models to observe data. You use bar graphs to measure data.

• you use your senses to observe data. You use your tools to measure data

• you use experiments to observe data. You use a hypothesis to measure data

• you use variable to observe data. You use empirical evidence to measure data

Gabe is interesting in snakes that live in the desert. He wants to know how fast the snakes move. Which of these could Gabe use to collect data in his investigation?

• balance

• graduated cylander

• hand lens

• stop watch

Tags

NGSS.MS-PS3-1

Alix did an experiment to test a scientific explanation about how fertilizer affects plants. Plant A had fertilizer. Plant B did not. All other conditions were kept the same. Plant A grew taller and was greener in color. Analyze and evaluate the empirical evidence . What is the best explanation

• fertilizer does not affect the growth of bean plants

• fertilizer causes bean plants to grow more quickly

• fertilizer causes bean plans to grow more slowly

• the same fertilizer would make all plants grow more quickly

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Ranjit wants to build shelves in a closet. The closet is 2 meters wide. The wooden boards he wants to use are more than 2 meters long. He will need to measure the boards, the use a saw to cut the correct length. What tool should Ranjit use to collect and analyze measurements to find the correct length of the boards?

• a balance

• a pedometer

• a meterstick

• a graduated cylinder