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Grade 4 OFS Scientists. What we now know....

Total questions: 75

Worksheet time: 3hrs 37mins

Name
Class
Date
1.

What is a hypothesis?

a)

A hypothesis is the right answer to an experiment.

b)

A hypothesis is the wrong answer to an experiment.

c)

A hypothesis is an educated guess.

d)

I don't know.

2.

True or False: Your hypothesis can never be wrong.

a)

True

b)

False

3.

The scientific process is most similar to:

a)

Following a recipe

b)

Learning a language

c)

Building a bridge

d)

Solving a mystery

4.
What you learned from the experiment is the ___.
a)
conclusion
b)
hypothesis
c)
variable
d)
materials
5.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What variables should be kept constant/controlled? 
a)
type of plant, flower pot,  soil, and amount of sunlight
b)
water, apple juice, milk
c)
only the amount of sunlight
d)
type of plant only
6.

The general steps used when conducting an experiment.

a)

observation

b)

variable

c)

hypothesis

d)

scientific method

7.

A fair test can be created using what three steps? (Choose three)

a)

Change only one thing

b)

Measure something

c)

Keep everything else the same

d)

Wearing a Scientist's coat

8.

Which is the changed variable in this fair test?

a)

type of soil

b)

amount of soil

c)

number of seedlings

d)

size of pot

9.

Cows Moo Softly stands for

a)

Change

Many

Shoes

b)

Change 1 thing

Measure or Observe

Same for everything else

c)

Chips

Milkshakes

Snag

10.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

11.

What is the procedure of an experiment?

a)

What you see happening with the materials. (see, touch, feel)

b)

Step-by-step instructions for completing the experiment.

c)

An idea or explanation that you can test through study and experimentation.

12.

Which option below is an example of an absorbent item?

a)

A paper towel

b)

A sponge

c)

A piece of wax paper

13.

What does it mean if someone said an object is 'absorbent'?

a)

It is a gas

b)

It does not soak up liquids

c)

It soaks up liquids

14.

What makes your experiment a FAIR TEST?

a)

My mother says I'm a very fair person.

b)

All the VARIABLES were the same. The pieces of materials were the same size and the amount of water I used was the same.

c)

I decided how big each piece of paper should be, I made some bigger as I liked the colour.

d)

All of the above answers are correct.

15.

When I did my experiment, to make sure it was a FAIR test, I did the following?

a)

Kept to the correct time for each test.

b)

Cut all the materials used the SAME size.

c)

Used the same amount of water for each test.

d)

ALL OF THE ABOVE.

16.

For your absorbency experiment, we used VARIABLES, which ones stayed the same? The ones thats I keep the same are called CONTROLLED variables.

a)

time, size of material, fun.

b)

time, size of material, different kind of liquids

c)

time, size of material, same amount of water used.

d)

time, different sizes of materials, fun

17.

Transparent and brittle

a)

Metal

b)

Sponge

c)

Glass

d)

Plastic

18.

Shiny and conducts electricity

a)

Meetal

b)

Polythene

c)

Rubber

d)

Metal

19.

Flexible and elastic

a)

Fabric

b)

Tissue paper

c)

Rubber

d)

Wood

20.

Hard and attracted to a magnet

a)

Wool

b)

Wood

c)

Metal

d)

Cotton

21.

Weak and absorbent

a)

Fabric /faabrick

b)

Paper /tissue paper

c)

Polythene/plastic

d)

None of theme

22.

refers to the material’s ability to return to its original position when it is dropped from a given height

a)

bounce

b)

elasticity

c)

strength

d)

uniformity

23.

Which material would work best for a car tire?

a)

rubber

b)

glass

c)

plastic

d)

paper

24.

Which material would work best for a towel?

a)

rubber

b)

paper

c)

fabric

d)

plastic

25.

Which material would work best for a sports bottle?

a)

fabric

b)

paper

c)

glass

d)

plastic

26.

Which material would work best for a window?

a)

fabric

b)

metal

c)

glass

d)

rubber

27.

Handles of cooking pots should be made of?

a)

Metal

b)

Plastic

c)

Glass

28.

Which of these materials is a good conductor of heat?

a)

Wood

b)

Ceramic

c)

Metal

29.

Which is the best material for making a bell?

a)

Glass

b)

Paper

c)

Metal

30.

Which is the best material for making a railway tracks?

a)

Iron

b)

Wood

c)

Rubber

31.

Which one of these following objects can be classified as absorbent?

a)
b)
c)
d)
32.
What property of a toy's packaging helps protect the toy?
a)
It is absorbent
b)
It is stretchy
c)
It is strong
d)
It is flexible
33.
Why is a chair made of metal a good choice?
a)
It is tall
b)
It is silver
c)
It is stretchy
d)
It is strong
34.
A bungee cord needs to be made out of something _____________.
a)
short
b)
light
c)
stretchy
d)
thin
35.
Why is foil not a good material for cleaning up a spill?
a)
It is not absorbent
b)
It is not big
c)
It is not stretchy
d)
It is not green
36.
What property of a raincoat makes it useful?
a)
It is absorbent
b)
It is not absorbent
c)
It is soft
d)
It is pink
37.
A toothbrush has bristles that are ________ so they can clean our teeth.
a)
rough
b)
smooth
c)
soft
d)
colorful
38.

Most non-metals do not conduct heat energy well. This makes it useful for making....

a)

Pot lids

b)

Bottle caps

c)

Pan handles

39.
Which is NOT an insulator.
a)
Wool
b)
Plastic
c)
Copper
d)
Glass
40.
Which one is a conductor? 
a)
wood 
b)
iron 
c)
plastic spoon 
d)
paper 
41.
Is iron a conductor or insulator?
a)
Conductor
b)
Insulator
42.
Conductors are materials that...
a)
Allow heat to pass through
b)
Stop heat from passing through
c)
Allow cold to pass through
d)
Stop cold from passing through
43.
All of the following are conductors except _______.
a)
metal spoon
b)
wire
c)
iron nail
d)
plastic spoon
44.

Gloves help keep your hands warm in winter because:

a)

They are conductors of heat.

b)

They are fuzzy.

c)

They are conductors of electrical energy.

d)

They are insulators.

45.
An object that doesn't conduct heat well is known as:
a)
a conductor
b)
an insulator
46.

Thermal energy travels...

a)

Hot to cold

b)

Cold to hot

c)

Inside to outside

d)

Outside to inside

47.
Which would probably keep an ice cream cone from melting?
a)
An ice cream cone
b)
A styrofoam cup
c)
A plastic cup
48.
Gloves help keep your hands warm in winter because:
a)
They are conductors of heat.
b)
They are fuzzy.
c)
They are conductors of electrical energy.
d)
They are insulators.
49.
Why should oven gloves be made from materials which are good thermal insulators?
a)
Oven gloves made from good thermal insulators will be more comfortable
b)
Oven gloves made from good thermal insulators will keep the food hot
c)
Oven gloves made from good thermal insulators will protect hands from being burned
d)
Good thermal insulators will keep the oven hot
50.
David made hot tea. He wants to put the tea in a cup that will not burn his hands. David should NOT put his tea in a cup made of - 
a)
wood
b)
aluminum
c)
styrofoam
d)
ceramic
51.
What is a conductor?
a)
a material that slows the transfer of heat
b)
a material that transfers heat easily
c)
a material that is fluffy
d)
a material that is temperature controlled
52.
Mittens help keep your hands warm in winter because
a)
they are colorful
b)
they are fuzzy
c)
they are conductors
d)
they are insulators
53.

Heat transfers from ______ objects to cold objects.

a)

Cold

b)

Hot

c)

Convection

d)

Radiation

54.

Hot air ______ while cool air ____

a)

Sinks, Rises

b)

Rises, Rises

c)

Rises, Sinks

d)

Convection, Radiation

55.
When you touch a cold window, how is energy being transferred?
a)
The window transfers heat to you 
b)
You transfer heat to the window
c)
The sun transfers heat to you
d)
None of the above
56.

Ice melting in a cup is caused by....

a)

The ice is heated up by the drink

b)

Ice is cooling down the liquid

57.

What is the range of pH values in an acidic solution?

a)

0-7

b)

7-14

c)

15-239058204958

d)

pH = 7

58.

What methods can you use to measure the pH of a solution?

a)

Observing color or clarity

b)

Measuring mass or volume

c)

Measuring density or electrical conductivity

d)

Using acid base-indicators or pH meters

59.

Which is the stronger acid?

a)

pH 1

b)

pH 4

c)

pH 8

d)

pH 13

60.
A solution with a pH of 7 is________
a)
increasing
b)
neutral
c)
decreasing
d)
apple juice
61.

Pure water is _______ on the pH scale.

a)

Acid

b)

Base

c)

Neutral

62.

Which of these options correctly represents the colors cabbage juice indicator turns?

a)

Acid- Red, Base- Green

b)

Acid- Purple, Base- Red

c)

Acid- Green, Base- Purple

d)

Acid- Red, Base- Purple

63.
Which of the following substances is basic?
a)
Apple juice
b)
Ginger ale
c)
Baking soda
d)
Distilled water
64.

What pH is the strongest base?

a)

1

b)

7

c)

4

d)

14

65.
When eating sour gummy candies, the sour comes from......
a)
Carbonic Acid
b)
Acetic Acid
c)
Citric Acid
d)
Sulfuric Acid
66.

By August, a student noticed that the sunflowers outside his house were as tall as the back door of his house. About how tall were the sunflowers?

a)

0.2 meters

b)

2 meters

c)

20 meters

d)

200 meters

67.

You made some hot chocolate and it was 99°C. After waiting about 10 minutes it was 75°C. What temperature do you think it would be after 10 more minutes?

a)

10°C

b)

50°C

c)

80°C

d)

100°C

68.

Which group share the same physical properties?

a)

orange juice, orange, sand

b)

sand, marble, orange juice

c)

marble, ball, orange

d)

orange, sand, water

69.

Which of these could you observe?

a)

The student was hungry

b)

The student loved Math

c)

The student was thinking about reading a book

d)

The student didn't finish their homework

70.

How do you start a scientific investigation?

a)

with a prediction

b)

with a conclusion

c)

with a question or problem

d)

with organized data in tables and charts

71.

The three states of matter are:

a)

solid, ice, liquid

b)

solid, air, liquid

c)

gas, solid, water

d)

liquid, gas, solid

72.
Observations use what?
a)
Graphs
b)
Your 5 senses
c)
Scientists
d)
Predictions
73.

You should never ______ chemicals or materials used in lab.

a)

eat

b)

drink

c)

smell

d)

all of the above

74.

You should follow the scientific method when you are a conducting an experiment because

a)

it ensures you are doing a reliable test

b)

it is fun

c)

it helps you get the right answer

d)

your teacher told you to

75.

what is matter? give the states of matter you know

a)

matter is everything around..solid,liquid and gas

b)

matter i can touch...water,stones,air

c)

everyting around us

d)

i dont know

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