Prior to obtaining the mass of an object on the electronic balance, you must first...

Press the zero button to clear the balance

Unplug the balance from the wall

Place the sugar crystals directly on the metal plate, NOT in a container

Which of the following is NOT a goal of science?

to establish a collection of unchanging truths

to investigate and understand the natural world

to explain events in the natural world

to use derived explanations to make useful predictions

Why is collaboration so important in the building of scientific knowledge?

Collaboration allows for the sharing of knowledge to better develop plans and experiments.

Collaboration prevents plagiarism.

Collaboration allows more people to take the blame if something goes wrong.

Collaboration allows private companies to make more profit from their employees' works.

A scientific hypothesis...

can be tested by experiments or observations.

can be based on personal beliefs or opinions.

does not have to be tested to be accepted as correct.

is a proven fact with much evidence to support it.

Susie places 3 beakers in the freezer. The first beaker contains water only, the second contains water and salt, and the third contains a water and sugar solution. Susie recorded the temperature and the time at which each mixture froze. Which is the most appropriate hypothesis for her experiment?

The addition of different substances affect the freezing point of water.

Salt affects the freezing point of water.

The addition of salt raises the freezing point of water.

The addition of sugar lowers the freezing point of water.

A group of students set up an experiment with three plants that are each exactly five inches tall. Plant 1 is given fertilizer A, plant 2 is given fertilizer B, and plant 3 was given fertilizer C. All were given the same amount of water once a day. After 4 weeks their height is measured again to determine growth. What is wrong with this experiment?

There is no control group for this experiment.

There were two variables changed in the experiment: fertilizer or not and amount of water

Plants grow slowly, so the time frame is too short to see results.

The plants need to be taller at the beginning of the experiment to get more accurate measurements.

Tina conducted an experiment to test her hypothesis. Her hypothesis was that by crushing aspirin and putting it into potting soil increases the growth rate of tomato plants. The results of the experiment show that there was no significant difference in the growth rates between the control and the experimental groups. What should Tina do with the results of this experiment?

Use the results to look at the situation in a new way, learn, and reapply it by altering the hypothesis and conduct another experiment to test her new hypothesis.

Assume she did the experiment incorrectly, ignore the results, and conduct the experiment again.

Publish the results of the experiment and claim the converse of the hypothesis is true.

Assume that there was something wrong with the aspirin or plants.

Biology Unit 1 Test Review

Authored by Alicia Lisee

Biology

9th Grade

25 Questions

NGSS covered

Used 32+ times

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Content View

Student View

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the statements below demonstrates a student using correct lab safety procedures?

Suzanne did not use all of the sulfuric acid she poured out for the experiment, so she returned the remainder to the stock bottle.

Rodney wafted the fumes produced during the reaction toward his nose.

Andrew heated the test tube towards himself in order to better observe the reaction.

Kadie was aware of the lab procedures that day so she began the lab before the rest of the class to be sure she would finish.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Cindy broke a test tube. Carefully she picked up pieces with one had and placed them in her other hand. Then she dumped the glass pieces into the wastebasket. Which lab safety rule is being broken in the scenario?

Keep the work area clean and clean up after the lab is over

Do not pick up broken glass with your bare hands

Do not taste any of the lab materials

Tie back long hair and push up long sleeves

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which piece of lab equipment is pictured below and has specific markings for highly accurate measurements of liquid volumes?

Beaker

Graduated Cylinder

Erlenmeyer Flask

Test Tube

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What piece of lab equipment is pictured below and is used to hold and heat liquids and serves multiple purposes in the lab?

Beaker

Graduated Cylinder

Erlenmeyer Flask

Test Tube

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The base unit of volume in the metric system is the...

meter.

gram.

liter.

newton.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The standard unit of length in the metric system is the...

gram.

liter.

yard.

meter.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The metric system is based on a value of _____, which makes converting much easier.

100

1000

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Biology Unit 1 Test Review

Which of the statements below demonstrates a student using correct lab safety procedures?

Cindy broke a test tube. Carefully she picked up pieces with one had and placed them in her other hand. Then she dumped the glass pieces into the wastebasket. Which lab safety rule is being broken in the scenario?

Which piece of lab equipment is pictured below and has specific markings for highly accurate measurements of liquid volumes?

What piece of lab equipment is pictured below and is used to hold and heat liquids and serves multiple purposes in the lab?

The base unit of volume in the metric system is the...

The standard unit of length in the metric system is the...

The metric system is based on a value of _____, which makes converting much easier.

Which of the metric conversion units below would be the best to measure the volume of water in a swimming pool?

A typical aspirin has a mass of 500 mg. Convert this quantity to grams.

Below are two measurements. Determine if the first is greater than, less than, or equal to the second. 1500 mL is ________________ to 1.5 L

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