5-?=15
-10
What do you call an atom that has more protons than electrons?
Cations
Name five different power sources
Solar panels, air power plant, nuclear power, hydroelectricity power, wave energy, fossil fuel
Why can't you tickle yourself?
The human brain does not sense any threat from yourself. It does not see yourself as a threat meaning it does not react
Which ocean lies on the east coast of the United States?
The atlantic
x+18-5x
-4x+18
You can't live without iron. Where in the body is most of the iron located?
Most of the iron in a human is in the bloodstream.
When did the iPhone first become available? A-2008 B-2007 C-2006
B-2007
How do you calculate the amount of force an object has
F=mxa
How many great lakes are there? (1-7)
5
ab+b/b
A+1
What is a catalyst? How does it work?
a catalyst is an element that bonds up two different elements to form a chemical reaction.
True or false gold is not a conductor of electricity
False
What is the speed of earth's gravity? Guess if you dont know
9,18 m/s
Which of these cities are not in Europe? A-Reykjavik B-Barcelona C-Moscow D-Prague
C-Moscow
n a packet there are 36 cookies.Three guys eat up almost all cookies. Brahim eats ⅙, David 2/9, Questor 5/12 of the cookies. How much of the cakes remains for Brahim's little brother? respond in fractional form.
7/36
What is the fourth most abundant element in the universe in terms of mass? A-carbon B-Nitrogen C-Oxygen D-Helium
A-Carbon
What is nanotechnology? explain your answer.
Nanotechnology are the study of extremely small things and can be used across all the other science subjects, such as chemistry, biology, physics, materials science, and engineering.(Tony´s new iron man suit)
What causes a tennis ball to bounce on the floor?
he energy from the ball hits the surface of the floor, this energy needs to get transferred so it sends it backup to the ball and other objects up(mostly the ball)
Which U.S. state is the Grand Canyon located in? A-Arizona B-Arizona
Arizona
4ab+8b2/2(a+2b)
2b
Water-based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk? A-slightly acidic B-Strong acid C-Neutral D-Slightly basic E-Does not have a PH level.
Slightly acidic 500
What kind of functions does a motherboard have?
A motherboard is the centre of a computer, were all the cables and other components like the graphics card and the CPU are installed
Why is earth in its orbit, estimate the approximate gravitational pull of the sun
The sun's gravitational pull is 274 m/s which is keeping the solar system in place.
Which is the largest body of water A-pacific ocean B-Indian ocean C-Atlantic ocean
A-Pacific ocean