Question

harry is investing magnets. He wants to find out wheather a magnt can pick up an paper clip through paper, gkass and other materils

What is the best reason for recording his steps and results carefully?
A. someone can also replicate the experiment to check his results
b. His results won’t be accurate
C. No one will be able to understand his hypothesis
D. He may not remember what materials he


Question 2. scientists conducting research found a new type of plastic. they are doing experiments to learn about its properties. why would do scientist want to repeat their experiment?

1. To test different plastics
2.to check this plastic is the same as another plastic
3. to make sure that they that they click on accurate
4. to try to color the purse for different colors



Question 3

Sally is making a graph to show the length of time different brands of battery lasted in the flashlight. which type of breath would best show the data?

Circle graph
Bar graph
Picture graph
line graph


Question 4

Dora thinks that there are more frogs in the pond by her house when the water temperature is high. She is making a chart to use as she gathers data to see whether she is correct. what data should door record on her chart ?

Date, air temperature, wind speed, number of frogs
Date, time, water temperature, number of frogs
Time, air temperature, water temperature
Date, time, air temperature, number of frogs


Question 5.
Nanette and Alex are comparing the properties of the different samples of sand. they have recorded the colors and describe the size of the particles. they want to use a breaker to measure each sample. which property of matter are they recording?

Mass
volume
texture
temperature


Question 6.
Luke & Amelia are comparing some substances. they are using the properties of Texture, hardness, flexibility and magnetic attraction. which types of substance are they comparing?

Only liquids
Solids and liquids
liquids and gases
only solid


Question 7.
A substance can be identified based on his physical properties
which of the following is a physical property of the liquid.

It’s shape can change
it has indefinite volume
it has no mass
it has a rough texture


Question 8.
Scientist have spent many decades developing the theory about what makes up all matter. which of the following statements is true?

All matter is made of small particles
All matter is alive
All matter has colors
all matter has an odor.


Question 9.
Paola knows that Matter has mass and takes up space. Which of these is NOT an example of matter?

Orange juice
cloud in the sky
soft pillow
beam of light


QUESTION 10.
Fernando Comparing magnets by counting the number of steel paper clips each will pick up who concludes that some magnets are stronger than others which of these observations provide evidence to support his conclusion?

All of the magnets were different sizes
some magnets picked up more paper clips and other magnets
none of the magnets picked up all the paper clips
the magnets and that’s were not all the same color


Question 11.
Peter and Gary are doing a class demonstration to show that solids, liquids and gases all have mass. they use the balance for the solids and the liquids. which is the BEST way for them to show that air has mass?

Put an empty bottle on the balance
Use a fan to make a current of air
compare the masses of full and empty balloons
Heat water to show it changing into water vapor


Question 12.
According to the scientific theory of atoms every atom is made of even smaller particles. which of the following statement is true?

Solid liquid and gases are all made of Atom
Gases and liquids are made of Atom but solids are not
solids are made of atom but gases are not
gases are made of atom but liquids are not

Answer 1

Answer:

1. 1st ka b answer
2. b
3. d
4. c
5. d

Explanation:

this is your answer