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TEKS CHECK #1 TEKS CHECK #1

Conclusion: Hearing aids are an effective way to treat hearing loss.

A study was conducted to test the effectiveness of hearing aids. People with different types of hearing loss were included in the study. Which question would help in determining whether the conclusion above is valid?

A. What was the average age of the people in the study?B. What was the most common occupation of people in the

study?C. How many people were included in the study?D. How many people in the study had vision problems?

CHow many people were included in

the study?

Ap=mv

40x40=1600 kgm/s

• If your speed was 10 miles/hr and you sped up to 50 miles/hr in 20 hours, what was your acceleration?

– A. 2 m/s2– B. 10 m/s2– C. 20 m/s2– D. 25 m/s2

A50-10/20=2 m/s2

• Which student had the greatest momentum during football practice?

– A. James is a 100 kg running at 5.0 m/s– B. Teddie is 189 kg running at 5.3 m/s– C. Jordan is 123 kg running at 6.5 m/s– D. Blake is 115 kg running at 4.9 m/s

Bp=mv

189x5.3=1001.7

• What is the slope of a distance vs time graph?

– A. Speed– B. Acceleration– C. Momentum– D. Force

Aspeed!

Bp=mv

Bs=d/t

CThe

measurements are both precise and

accurate.

BGraduated cylinders are

more precise. You only need a container that goes to 50

mL, because you are

measuring 42.5 mL.

B 19.42 mL

B The

measurements were precise, but

not accurate.

D 10/14 = .714

km/hour

B M-is the most

constant speed (straight line)

B 240/3=80

C 190/2.5=76 m/s

B 15-6 /3 = 3 m/s2

341.8 g

A 36/4 = 9 m/s2

C Pointing away from you and

your partner

Who do you call in the case of an emergency?

• A. Ghost Busters• B. Ms. Kimm• C. Your teacher• D. Just Run!!

C your Teacher!!

What piece of lab safety equipment should you use if a

chemical gets in your eye? • A.

• B.

• C.

• D.

C C- Eyewash

station

C Running will feed oxygen to the fire.

A Report this data.

Why should you not wear contacts in lab?

• A. They don’t match your lab coat.• B. Danger fumes could get trapped

under the lenses and damage your eye.

• C. Goggles look way cooler.• D. Goggles will allow you to see

better than contacts.

B Dangerous fumes can get trapped

under the contact lenses.

C You can get a

chemical burn.

What should you do to your hair and sleeves before

starting an experiment? • A. Roll them up so they won’t catch on

fire or get dangerous chemicals on them.

• B. Cut them.• C. Tear them.• D. Roll them down so they won’t catch

on fire or get dangerous chemicals on them.

A Roll them up so they won’t catch on fire or

get dangerous chemicals on them.

C Data does not support

the hypothesis.

C Flush eyes with

water.

What types of safety equipment could be used

to put out a fire?

• A. Fire blanket, Fire extinguisher, Safety shower

• B. Fire blanket, Fire extinguisher, eyewash station

• C. Fire extinguisher, Fire hose, Salt• D. Fire blanket, Fire extinguisher,

Fire hydrate

AFire blanket, Fire

extinguisher, Safety shower

D To reduce

chance of error

DThe students are using one measuring device

(buret), which measures in small

increments.

1 2

Measures in smaller increments.

1 2

What is the purpose of the scientific method?

• A. to collect and analyze data• B. to form a hypothesis• C. to test a hypothesis• D. to ask a question

Cto TEST the HYPOTHESIS

What do gloves protect you from?

• A. Dangerous fumes• B. the Boogie man• C. Dangerous chemicals• D. Bacteria

CDangerous chemicals

Which of these pieces of equipment does NOT

measure volume of liquids?

• A.

• B.

• C.

• D.

DTest tubes do not measure volume;

there are no lines one them.

JNo one has proven

that dogs are happy if they wag their

tales.

Which statement can not be tested?

• A. Squirrels are better pets than racoons.

• B. Squirrels usually hibernate around the winter months.

• C. Racoons are more likely to eat insects than squirrels.

• D. There are more squirrels in the fall than there are in the summer.

ARacoons being a better pet is an

opinion.

BRemember…you want

the HARMLESS substance to be the one you’re pouring

into.

After you ask a question, what is the

next step?• A. Design an experiment• B. Collect and Analyze data• C. Form a hypothesis• D. Test your hypothesis

CForm a

hypothesis.

Which of these can NOT be tested?

• A. Cars are faster if they have more horsepower in their engines.B. Cars are better than trucks, because they look better.C. Trucks have larger engines than cars, because they are bigger in size.D. There are more truck models designed than car models.

B“Cars are

better than trucks” is an

opinion.

AFor chemicals, you only need

goggles, gloves, and an

apron.

In lab, if you are working with fire, paper, and a sharp object,

what signs should you be looking for?

• A. clothing protection safety, eye safety, hazardous chemical safety.

• B. clothing protection safety, eye safety, or sharp object safety.

• C. Clothing protection safety, eye safety, open flame safety, and sharp object safety

• D. Clothing protection safety and eye safety

What is the first step of the scientific method?

–A. State your hypothesis

–B. Make an analysis–C. Ask a question

CAsk a question.

AAsk your

instructor—always!

Which of these can NOT be tested?

• A. There are more breeds of cats than there are dogs. B. Cats eat more soft foods due their teeth structure and digestive system.C. Dogs run faster than cats, because their limbs are longer. D. Dogs are a man’s best friend.

DDogs are a man’s best friend is an

opinion.

ARepeat the experiment.

You are working with your lab partner, and your lab partner burns

his hand. How do you apply first aid?

–A. Apply direct pressure–B. Apply cold water and inform your instructor

–C. Use the safety shower–D. Apply cold compresses

Bgraduated cylinder

Cchemical burns

The detective found Mr. Boggs body on the floor. He gathered his material, conducted his

investigation, recorded his data, and presented his conclusion to the media. What step of the scientific method did he forget to

follow?

• A. form a hypothesis• B. perform the experiment• C. communicate results• D. collect data