Civilizations
This civilization built the first observatories and created calendars based on the stars.
the Mayas
The smallest unit of an element is called ____
atom
The Earth rotates on its axis once every ____
24h
Urbanization means the growth of a ____
City
If a book costs $20 and you buy 3, how much do you spend?
60
The ancient Greeks first believed planets moved in perfect circles around this central object.
The Earth
Boiling water is an example of this type of change.
Physical change
The Earth’s revolution around the Sun causes this phenomenon.
Seasons
One basic service cities need to provide for health.
Sanitation
A pizza is cut into 8 slices. You eat 3 slices. What fraction of the pizza did you eat?
3/8
This tool was used by sailors to navigate using the stars.
Astrolabe
Salt dissolved in water can be separated by this process.
Evaporation
Tides are mainly caused by the gravitational pull of this celestial body
Moon
São Paulo grew rapidly during this century.
20th century
A class has 24 students. If they are divided into 6 equal groups, how many students per group?
4
Name one way astronomy influenced agriculture in ancient civilizations.
predicting seasons for planting
Burnt wood is an example of this type of change.
Chemical change
This term creates the apparent movement of the Sun across the sky.
Rotation
Name one environmental consequence of urbanization.
Pollution
Deforestation
Traffic
A shirt costs $50. It is on sale for 20% off. How much is the discount?
10
This ancient civilization aligned its pyramids with certain stars
Egyptians
Name two elements from the first ten in the periodic table.
hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon
How do we call a human determined group of stars?
This type of transportation system is essential in large cities.
Public transportation
A recipe needs 23\frac{2}{3}32 cup of sugar. If you make 3 times the recipe, how much sugar do you need?
2 cups