Free Printable Observation, Inference and Variables

1.

Which of the following is an observation about this picture?

a)

The boy has fallen off his bike.

b)

The boy is in a lot of pain.

c)

The boy has injuries to his knees

d)

The boy learned his lesson about wheelies

2.

Which of the following statements is an inference about the picture

a)

The vase is broken.

b)

The girls' bow is blue and purple.

c)

The girl broke the vase.

d)

The girl has blonde hair.

3.

Scenario: you walk into the science classroom and see an unfamiliar adult at the front of the room. You also see that Mr. Lundberg is not in the room. You wonder where he could be.
Which one(s) are observations?

a)

You walk into science.

b)

You see an unfamiliar adult.

c)

You wonder where Mr. Lundberg could be.

d)

None of these are observations

4.

Scenario: you walk into the science classroom and see an unfamiliar adult at the front of the room. You also see that Mr. Lundberg is not in the room. You wonder where he could be. "Maybe he's home sick today" you think to yourself.
Which of these is an inference?

a)

You walk into science.

b)

You see an unfamiliar adult.

c)

You do not see Mr. Lundberg

d)

"Maybe he's home sick today"

5.

Which of these statements is NOT an observation about this picture?

a)

There is a red candle on the window sill.

b)

The moon is full.

c)

It is Christmas time.

d)

There's snow on the tree.

6.

Which of the following is NOT an inference about the man in this picture:

a)

The man hates his purple shirt.

b)

The man has a purple shirt.

c)

The man is having a bad day.

d)

This man is upset because he's hungry

7.

Scenario: You are shopping and then you hear glass breaking, someone yelling, and you smell pickle juice. Which of these is/are inferences?

a)

The pickle jar was slippery.

b)

Someone dropped a jar of pickles.

c)

You smell pickle juice

d)

That person is having a bad day.

8.

She is holding an umbrella

a)

observation

b)

inference

9.

The mass of the chocolate cake is 250 g.

a)

qualitative

b)

quantitative

10.

Which of the following is an example of quantitative data?

a)

The color of your car

b)

A person's state of residence

c)

A person's Zip Code

d)

A Person's Height

11.

The tree is 35 feet tall.

a)

Qualitative Observation

b)

Quantitative Observation

12.

Juan wanted to find out whether the concentration of salt in water affected how long it takes water to cool. He put 4 identical plastic glasses, each of which contained 225 mL of a different concentration of salt solution, into a freezer. The different salt concentrations were 0 percent, 10 percent, 20 percent, and 30 percent. He recorded the amount of time it took for each solution to cool to a temperature of 3 degrees Celsius.

What is the independent variable?

a)

Volume of liquid in glasses

b)

Concentration of salt solution

c)

Amount of time in the freezer for solution to cool to 3 degrees Celsius

d)

Degrees Celsius that the solution cooled

13.

Juan wanted to find out whether the concentration of salt in water affected how long it takes water to cool. He put 4 identical plastic glasses, each of which contained 225 mL of a different concentration of salt solution, into a freezer. The different salt concentrations were 0 percent, 10 percent, 20 percent, and 30 percent. He recorded the amount of time it took for each solution to cool to a temperature of 3 degrees Celsius.

What is the dependent variable?

a)

Volume of liquid in glasses

b)

Concentration of salt solution

c)

Amount of time in the freezer for solution to cool to 3 degrees Celsius

d)

Degrees Celsius that the solution cooled

14.

Juan wanted to find out whether the concentration of salt in water affected how long it takes water to cool. He put 4 identical plastic glasses, each of which contained 225 mL of a different concentration of salt solution, into a freezer. The different salt concentrations were 0 percent, 10 percent, 20 percent, and 30 percent. He recorded the amount of time it took for each solution to cool to a temperature of 3 degrees Celsius.

What are the constants? (can be more than one)

a)

Glasses

b)

Volume of salt solution

c)

Freezer

d)

Concentration of salt solution

e)

Amount of time in freezer for solution to cool to 3 degrees Celsius

15.

Juan wanted to find out whether the concentration of salt in water affected how long it takes water to cool. He put 4 identical plastic glasses, each of which contained 225 mL of a different concentration of salt solution, into a freezer. The different salt concentrations were 0 percent, 10 percent, 20 percent, and 30 percent. He recorded the amount of time it took for each solution to cool to a temperature of 3 degrees Celsius.

Which glass is the control group?

a)

0 percent

b)

10 percent

c)

20 percent

d)

30 percent

16.

Susan wanted to know how the amount of water affected the rate of seed germination. She read that 150 mL of water was the ideal amount of water for seed germination of up to 10 seeds in 500g of soil. She got 5 identical flower pots and placed 500g of potting soil in each. She then planted 10 seeds of the same type in each pot. She placed the pots in the same location so that each received the same amount of light. The pots were given the following amounts of distilled water each day for 40 days:

Pot 1 50 mL

Pot 2 100 mL

Pot 3 150 mL

Pot 4 200 mL

Pot 5 250 mL

Each day she recorded the number of seeds that germinated and the height of each plant.

What is the independent variable?

a)

Amount of water

b)

Rate of seed germination

c)

Number of days to germination

d)

Location of pots

17.

Susan wanted to know how the amount of water affected the rate of seed germination. She read that 150 mL of water was the ideal amount of water for seed germination of up to 10 seeds in 500g of soil. She got 5 identical flower pots and placed 500g of potting soil in each. She then planted 10 seeds of the same type in each pot. She placed the pots in the same location so that each received the same amount of light. The pots were given the following amounts of distilled water each day for 40 days:

Pot 1 50 mL

Pot 2 100 mL

Pot 3 150 mL

Pot 4 200 mL

Pot 5 250 mL

Each day she recorded the number of seeds that germinated and the height of each plant.

What is the control group?

a)

Pot 1 50 mL

b)

Pot 2 100 mL

c)

Pot 3 150 mL

d)

Pot 4 200 mL

e)

Pot 5 250 mL

18.

The height of bean plants depend on the amount of water they received. What is the independent variable?

a)

Amount of water

b)

Height of the plants

c)

How many beans were produced

d)

Temperature the plants were in

19.

In this experiment the independent variable would be:

a)

The type of fertiliser.

b)

The potting mix used.

c)

The type of plant.

d)

The amount of water given per week.

20.

In this experiment the independent variable would be:

a)

The egg.

b)

The volume of water.

c)

The amount of salt.

d)

The float level.

Observation, Inference and Variables

Total questions: 20

Worksheet time: 3hrs 20mins

Similar Resources on Wayground