1. Technology can best be defined as ____________________ .
Brain Teaser
Technology can best be defined as ____________________ .
C. Applied Science
Science that uses computers
New inventions
Applied science
The use of lenses and microscopes

2. 10g of Honey, 907g of Flour (help p.27)
Brain Teaser
Find the percentages of EACH and make a pie chart for the following items:
474g of Water, 9.6g of Yeast,
28.4g of Butter, 10g of Salt,
10g of Honey, 907g of Flour (help p.27)
Water-33%, Yeast-0.66%, Butter-2%, Salt-0.69%, Honey-0.69%, Flour-63% # /Total weight(1439g) X 100 = %

3. Brain Teaser

4. Brain Teaser B. 0.100 km Convert the following:
100m, the length of a well-known track event, to kilometers.
B km
1000 km
0.100 km km km

5. Convert the following: 925 mL = ______ cm3.
Brain Teaser
Convert the following:
925 mL = ______ cm3.
925 cm3
1 cm3 = 1 mL
925 cm3
462.5 cm3
9,250 cm3
cm3

6. For a scientific theory to be valid, it must allow you to ___.
Brain Teaser
For a scientific theory to be valid, it must allow you to ___.
d. Make predictions
Obtain new results each time
Perform other experiments
Find new, more complex explanations
Make predictions

7. Find the density of the object: Given: m= 306g v= 22.5 cm3
Brain Teaser
Find the density of the object:
Given: m= 306g
v= 22.5 cm3
d g/cm3
D=m/v
13.6 cm3
0.07 g/cm3
0.07cm3
13.6 g/cm3

8. Find the density of the object: Given: m= 306g v= 22.5 cm3
Brain Teaser
Find the density of the object:
Given: m= 306g
v= 22.5 cm3
d g/cm3
D=m/v
13.6 cm3
0.07 g/cm3
0.07cm3
13.6 g/cm3

9. Convert the following: 300 cm  meters.
Brain Teaser
Convert the following:
300 cm  meters.
B. 3 m
0.3 m
3 m
30 m
0.003 m

10. Which tape measure gives you more precision? Why?
Brain Teaser
Suppose you measure a length of wire with two tape measures. One tape is marked every m, and the other is marked every 0.1 m.
Which tape measure gives you more precision? Why?
0.001 m tape measure
0.1 m tape measure

11. Which tape measure gives you more precision? Why?
Brain Teaser
Suppose you measure a length of wire with two tape measures. One tape is marked every m, and the other is marked every 0.1 m.
Which tape measure gives you more precision? Why?
A m The tape marked every m gives you more because with it you can report a length of 1/1000 m. The other tape is only precise to 1/10th m.

12. Brain Teaser C Poor accuracy (far
from post) and good precision (close together)
A Good accuracy (near
post) and good precision
(close together)
B Good accuracy (near
post) and poor precision
(spread apart)

13. Brain Teaser Scientific Method
_______________________ a series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.

14. State the (6) steps of the Scientific Method in order.
Brain Teaser
State the (6) steps of the Scientific Method in order.
Six Giant Hippos Eat Orange and Red Candy!
State the problem
Gather Information
Form a Hypothesis
Design an Experiment
Make Observations & Record Data
Draw a Conclusion

15. In a controlled experiment
Brain Teaser
In a controlled experiment
c. One variable is changed while all others remain fixed.
a. The outcome is controlled
b. One variable is fixed while all others are changed.
c. One variable is changed while all others remain fixed.
d. Results are obtained by computer models.

16. Brain Teaser a. making an observation.
The first step in the scientific method is usually
a. making an observation.
b. forming a hypothesis.
c. collecting data.
d. testing a hypothesis.
a. making an observation.