Unit 1 Test 2022

After using materials in an investigation how do you dispose of them?

• rinse them down the nearest sink

• put them back in their original containers

• wait for instructions from the teacher

• throw them in the trash

After completing experiments one should always ___________________.

• properly dispose of used materials

• wash your hands carefully

• clean up your lab area completely

• All of the above

Students have a plant to use in an experiment. They want to see what happens to the plant when it cannot get enough sunlight. Which should the students do to remove MOST of the plant's light?

• Place a clear plastic bag over the plant.

• Put the plant in a dark classroom closet.

• Put less fertilizer into the plant's soil.

• Place the plant's roots above the ground.

How does a hand lens help you collect and analyze information?

• It allows you to see things that are far away.

• It makes it easier to see things that are small.

• It captures an image of something on film.

• It helps you see things that are very dark.

A student drops a glass beaker of water on the floor. What is the FIRST thing the student should do?

• Mop up the water.

• Sweep up the pieces of glass.

• Pick up the pieces of glass.

• Tell the teacher about the accident.

Why should a scientist conduct multiple trials?

• to make sure the data is accurate

• because science is fun

• Laws of science can change

• To use different measuring devices

Science is the study of?

• Careers

• regions of Texas

• natural world

• classroom rules and procedures

A scientist makes an observation about the natural world.  She asks a question about what she observes and researches ways to answer the question.  Her research leads her to form a hypothesis.  What is a hypothesis?

• a question you can answer with an experiment

• an educated guess about what will happen

• data you collect during an investigation

• a conclusion

Scientists study the natural world.  Evidence is an important part of their studies.  What is evidence?

• an educated guess

• communicating results

• a statement about what will happen in an experiment

• data that supports or rejects a hypothesis

Which of the following is NOT part of the Scientific Method?

• Ask a testable question

• collect and organize data

• make a hypothesis

• build a model