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Science Experiments

Experiments often conducted by students to test different scientific theories and hypotheses

11,111 Questions

How much fossil fuels does the US use?

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Is a hypothesis is a decision based on the results of the experiment.?

No. An hypothesis is an idea put forward to explain an observation. Often you do the experiment to test the hypothesis. The results of the experiment may help you decide whether to discard your hypothesis or to test it further.

What is a legend on a science fair project?

The 'legend' is a piece of text explaining the purpose of the project and what it sets out to show.

Which factor is the dependent variable in an experiment?

The dependent variable is what the results yielded. For example, if you are testing humans, the dependent variable will be the test subject's answers. Some people also say it is what you are testing for if it is not testing on humans. For example, "the differences in growths of bacteria".

What is rust and how does it form?

Rust forms when metals containing iron mix with the oxygen in the air or the water and create a compound named iron oxide. This compoumd has water molecules, so we call it a hydrated compound. Chemically and very simply speaking, iron atoms lose a few electrons to oxygen atoms. This process, where electrons are lost from atoms, is the oxidation process. When oxidation occurs it produces a chemical reaction that creates iron oxide

Who is group that is exposed to the variable to be tested is called the?

Experiments typically involve:

1) Experimental group: the group of subjects exposed to the variable being tested.

2) Control group: should be as identical as possible to the experimental group, but is deliberately not exposed to the experimental variable - this provides a baseline measure from which the effect of the variable can be determined.

Why does everything else except variable needto be keep constant during the experiment?

In order to isolate and identify the effect of the variable being tested, it is important to keep all other factors constant. This allows for a more accurate and reliable assessment of the relationship between the variable and the outcome. If other factors were to vary, it would be difficult to determine whether any observed changes were due to the variable being tested or to external factors.

What happens if you hold the balloon over the paper for several minutes?

If you hold the balloon over the paper for several minutes, nothing significant will happen. The balloon will continue to hold its shape, and the paper will not be affected by it. The only change you may observe is a slight static charge buildup on the balloon, which could potentially cause lightweight objects like the paper to be attracted to it.

What is a catchy title for a science project on adhesives?

"You can stick it over here" or "Sticky Zone" might be good...

How long does it take to boil non salted water?

Forever, if you don't heat it above the boiling point; almost no time, if you heat it to 10 million degrees. In other words, it's too variable for any single answer to have any real meaning.

Explain the procedures that you might follow to collect collate evsluate and record feedback on case plans?

The procedure that you might follow to collect, collate, evaluate, or record feedback on case plans involves understanding existing laws and policies, looking at cultural considerations, and knowing the tools to use.

Can sctrach marks on your face diappear?

Scratch marks on the face have the potential to disappear over time, depending on the depth and severity of the marks. Superficial scratches may heal on their own within a few days or weeks, leaving little to no trace. However, deeper or more significant scratches may require medical treatment or interventions such as scar creams, ointments, or laser therapy to help reduce their visibility.

What is the definition of solution in math?

In mathematics, a solution refers to a value or set of values that satisfies an equation, inequality, or system of equations. It is the value or values that make the equation or inequality true.

What science experiment is best for a grade six student?

I like the tornado experiment. 1. Take two 2l pop bottles. 2. Fill the bottom bottle with water, and sprinkle some glitter on top. 3. Take the top bottle, put it on top of the other one, and duct tape it tightly. 4. Now, take the bottom bottle, flip it over, and spin it. It will look like a tornado inside the bottle. And the beauty of it is, once your done, the water drains to the other bottle, and you can do it again.

What is glucose oxidase peroxidase aminophenazone phenol?

Its a reagent used to determine the glucose content of a sample. its based on 2 coupled enzyme reactions with a colorimetric end-point:

D-glucose + O2 + H2O ----- glucose oxidase ------> H2O2 + gluconate

aminophenazone + phenol + H2O2 -----peroxidase----> a red dye + H2O

(NOTE: H2O2 product of 1st reaction acts as substrate for 2nd)

this red coloured sample can then be put into a spectrophotometer and an absorbency reading can be taken, this reading can be compared to a calibration curve and the content of glucose can be ascertained.

Are all scientific discoveries as result of research?

Most, but some are based upon every day findings and surprises. But really yes.

Science fair project questions?

There are various topics that can be covered for a middle school science project. Building a better battery, making a solar oven, testing the effects of clothing color on first impressions, and the effect of music on memory are ideas for science projects at the middle school level.

What does purpose mean in a science lab?

Purpose means what you are trying to prove by doing that lab or experiment.

For example, if you are doing a test to see if a candle lights without oxygen by placing it under a glass, then your purpose would be something like:

"To prove that a fire needs oxygen for its chemical reaction"

What is a good 5th grade science project?

Well, I have a lot of ideas, but this is only for Astronomy (Except for the few)

1. Make a mobile about space travel or space station

2. Make a model of a rocket launching site

3. Construct a realistic salt dough model of the moons surface

4. Crossword Puzzle

5. Word search

6. Scrambled word sheet

7. Paper Mache model of a planet

8. Make a shadow bow of the solar system

9. Make a Collage of Space Exploration

10. Create a board game

11. Build a model space station

12. Make a moon city.

13. Make a skit

14. Make a space suit

15. Read Several Greek, Roman, Norse, or Native American myths

16.Make a poetry

17. Make 10 story problems for math concerning interplanetary travel.

18.Research Medical dangers in space travel

19. Design a flag that Earths explorers placed on the planet of your choice

20. Make your own solar system with planets

21. Make a painting

22 Write a song

23. Interview 15 people. Find out what they remember about first hearing the news of the explosion of the space shuttle Challenger.

24. Read history of the first flight to the moon and write a skit

25. Make a display that will explain all of the phases of the moon

26. Make a bulletin board that displays of the USAs development of rockets, missiles, satellites, and space shuttles.

27. Make 9 questions you would ask another planet

28. Interview 10 people of 30 or older. Ask them of what they remember about the first satellite and the first moon landing. Write a newspaper story.

29. Time line of the most significant events in the history of space exploration.

30. Plan a weeks menu for three astronauts on a trip to the moon.

31. Design three bumper stickers advertising space travel

32. Ur on Mars or the moon, Plan the trip act it out

33. Your in charge of selecting the first school student to travel to outer space with a team of astronauts. Prepare a one page application blank for the job

34. Make a newscast

35. Make a newspaper of the latest update of a planet.

36 Make your own language

37. Make a poster and brochure advertising the perfect in the perfect vacation spot.

38. Design a planet

39. Make a time capsule.

40. Read myths that relate to the stars.

I just made them up! Hope this helps!

How do you make a slow mini parachute?

u need a white trash bag 6 pieaces of string scotch tape and some scissors

then cut the trash bag in half so u have a square then poke holes in each of the corners put each string in each hole and tie them in a knot then at the bottom where ur actionfigure goes tape the ends of the strings together and attach the strings to the action figure and test it

What can animal tracks tell about the animal that left them?

It more often than not will tell you what kind of animal left them, the size of that animal, and whether it was walking or running at full speed, or even in a conflict with another animal. It tells where the animal was going, whether it was alone or not, what it was doing, and many other things.

What are the advantages and disadvantages of having an exo skeleton?

advantages: superb protection, (like armour) camouflage

disadvantages: must molt to grow, leaving unprotected temporarily

What is Van Helmont's experiment?

Measurement and rationale for the growth of a willow tree is Van Helmont's experiment.

Specifically, Jan Baptist van Helmont (1580-1644) was a Brussels-born scientist. He was an astute observer of objects and processes. One of his famous experiments was centered on the five-year study of the growth of a willow tree (Salixspp). His conclusions of a 164-pound weight gain due to the intake of water through the roots and soil were prefatory to understandings of the conservation of mass even though he ignored the role of atmospheric carbon dioxide.