Estimation
Estimate
37 \times 92
37 \times 92 ~~ 40\times 90 = 3600
Evaluate
2^5
2^5 = 32
Write the following as a single power:
3^2\times3^3
3^2\times 3^3 = 3^5
Name all planets in our solar system from closest to the Sun to the farthest from the Sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The ________ and __________ of an object in the sky tells us where it is in the sky. What are these values for the North Star, if this star is almost directly North and is approximately 1/3 of the way "up the sky"?
Azimuth and altitude.
Approximately azimuth = 0, altitude = 30 degrees.
Estimate
38 \times 44
38 \times 44 ~~ 40 \times 40 = 1600
Evaluate
-2^6
-2^6 = -32
Write the following as a single power:
(-2)\times(-2)^2\times(-2)^10
(-2)\times(-2)^2\times(-2)^10=(-2)^13
The four closest planets to the Sun are called ____________ planets.
What is similar about all 4 of these planets?
Terrestrial planets. They all have solid surfaces you can stand on.
Who was the American president in 1969 when humans first walked on the Moon? Bonus: Who first walked on the Moon?
John F. Kennedy (JFK).
Neil Armstrong was the first person to walk on the Moon!
Estimate
59 \times 302
59\times 302 ~~ 60 \times 300 = 18 000
Evaluate
-(-2)^6
-(-2)^6 = -64
Write the following as a single power:
(10^4)^2/10^3
(10^4)^2/10^3 = 10^5
Which planets in our solar system have rings?
All gas giants (Jupiter, Saturn, Uranus, Neptune).
This word means an apparent shift in an object when viewing it from two different places.
Now, draw a diagram describing how this is used to determine the distance to a nearby star.
Estimate
83\times 198
83\times 198 ~~ 80\times 200 = 16000
Fill in the "?" to make the following true:
((-3)^3\times(-3)^4)/? = -3
((-3)^3\times(-3)^4)/(-3)^6 = -3
Write the following as a single power:
(x^10\times(x^20)^2)/(x^2\timesx^3)
(x^10\times(x^20)^2)/(x^2\timesx^3)=x^50/x^5=x^45
Mercury has no atmosphere. Name two things that are true about Mercury as a result of not having an atmosphere.
It's hot, but not as hot as Venus because it has nothing to "trap heat". It's also covered in craters because it has nothing to protect it from asteroids.
Eratosthenes determined the circumference of the Earth by measuring the length of __________ in two different cities in Egypt.
Shadows!
If a bacteria splits in half (doubles) every 10 minutes, how many bacteria are there in total after 1.5 hours?
1\times 2^9=2^9=512
Write the following as a single power, then evaluate it.
(A^5)^3/(A^10\timesA^5)
(A^5)^3/(A^10\timesA^5) = A^15/A^15=A^0=1