Name ___________________________ Date _________ Student #_____
Study Guide for Fourth Grade Science Week 8 CCA
1. Andrew measured and recorded the temperatures at three different times during
the day on Saturday.
7:00 am
2:00 pm
5:30 pm
What can you conclude about the day’s change in temperature?
There was an increase in the temperature throughout the day.
2. Nathaniel was playing basketball at the park. He spilled some water from his water
bottle on the concrete court. The temperature outside had reached the freezing
point of 0ᵒC (32ᵒF). What is going to happen to the water at this temperature?
The water will change to a solid state.
3. Juslyn conducted an outside experiment on three different days. She recorded the
results from her observations on her way home from cheer practice. Later she put
the results of her experiment in the table shown below.
Wednesday
Thursday
Friday
Outside
temperature
32ᵒC
29ᵒC
19ᵒC
My
Observations
the car is
dry
the car is
dry
tiny water
droplets
on the car
Study the data in the table and determine what change happened on the third day
when the temperature was cooler.
Condensation occurred
4. Anything that takes up space and has mass is called matter.
5. What is the difference between the morning temperature in Houston and the
morning temperature in Dallas?
Time
9:00 AM in Houston
9:00 AM in Dallas
21ᵒC
18ᵒC
Temperature
The difference is 3ᵒC.
6. If you left a crayon outside in the sun on a hot summer day, what would happen
to it?
The crayon will melt.
7. The fourth grade students were testing how long it would take for sugar to
completely dissolve in water. They used three beakers of water. For beaker #1
they labeled it Hot Water. Then they labeled beaker #2 Warm Water and beaker
#3 Cold Water. The students put 200 mL of water in each beaker. Then they
added one spoonful of sugar to each beaker of water and recorded the amount of
time it took for the sugar to completely dissolve. When the investigation ended,
the students were asked to draw a conclusion about what they learned. Based on
the results shown in the table below, what possible conclusion could the students
have made?
Trial 1
Trial 2
Trial 3
Cold Water
10:15
10:07
10:09
Warm Water
7:53
7:45
8:03
Hot Water
5:27
5:34
5:42
The results of the investigation prove that hot water dissolves sugar at a faster
rate.
8. Read the scale from a triple beam balance shown below. According to the picture,
what is the mass of the object being measured?
The mass is 37.3 grams.
9. The picture below shows chocolate syrup added to milk before and after the milk
was stirred. How would you describe what happened to the chocolate syrup after
stirring?
The chocolate syrup dissolved.
Before
After
10. Why is peanut and pretzel mix an example of a mixture?
The ingredients can be separated.
11. Why is sweet tea (sugar was added to the tea while brewing) considered a
solution?
The sugar dissolves and mixes evenly in the water.
12. Below is a plan that you can follow to remove salt from a solution of salt water.
Step 1:
Step 2:
Step 3:
Take a pencil and tie a string to it. Then lay the pencil across the top
of the glass of salt water, so that the string hangs into the solution.
Leave the glass undisturbed (no one will move or touch the glass) until
all the water is gone.
After all the water has evaporated, check the string to see if the salt
attaches to the string.
Why do you think this would be a good plan for removing the salt from the water?
You would probably think the salt in the solution will collect on the string when the
water evaporates.
13. What is the state of matter that maintains (keeps) its own shape and volume?
solid
14. It was a cold winter morning and Becky was riding the bus to school. She noticed
that every time she breathed on the window, it left water droplets and she could
write her name on the window. John told her that she was breathing warm air on
the window, and her air was like steam. What change took place when Becky’s
warm breath of air touched the cold bus window?
Her breathing is forming a warm gas (like steam). When the gas touches the cold
bus window it changes to a liquid.
15. Students in Mrs. Mysak’s class drew the following models of solutions and
mixtures they might see in everyday life. Which student’s drawing does NOT show
a picture of a solution?
Kool-Aid
Hot Tea
Salad
Lemonade
16. The science teacher placed a can of Coke and a tennis shoe on a balance.
The teacher asked the students to make a
conclusion from observing the balance.
What did the students conclude?
The Coke has more mass that the tennis shoe.
17. What do the changes in the states of matter below indicate (show)?
SOLID
add heat
LIQUID
LIQUID
add heat
GAS
LIQUID
SOLID
take heat away
18. Students in Mrs. Burleigh’s class measured the mass of different objects during a
science lesson. They were trying to see if the objects were heavy or light. Then
they took the objects and placed each in a tub of water to see if it would sink or
float. They recorded all the results in the table below. Which conclusion did the
students make from their investigation? Check their conclusion.
___objects with less mass
always float
___objects with more mass
always sink
___objects with less mass
never sink
_√_objects with more mass
do not always sink
Material
Mass
Float or Sink?
aluminum fork
100 grams
Sink
100 grams
Float
1 gram
Sink
1 gram
Float
rubber duck
safety pin
glass ornament
19. A student in Mrs. Howard’s class was asked to find the mass of a solution. First
he took out some standard mass weights and a beaker. Then he placed these two
measuring tools on a two pan balance. He found that the beaker alone had a mass
of 12 grams. After that he poured the solution into the beaker and placed it back
on the balance. The picture below shows what the student observed. What is the
mass of the solution?
The mass of the solution is
3 grams.
20. Joyce was making some M&M cookies. She added a cup of M&Ms to a cup of
sugar in the mixing bowl. What happened to the two ingredients when they were
stirred together?
The M&Ms and the sugar were close together after stirring the mixture, but could
still be separated.