physics
who found gravity?
Issac newton
what is the first stage of a frogs life cycle?
egg
how many planets are before earth in the solar system?
2
what is the formula for water?
H2O
who landed on the moon first?
neil armstrong and buzz aldrin
what is gravity
a non-contact force that pulls towards the center of mass.
what is an invasive species?
a species that was introduced and then damaged the ecosystem.
what controls the tides?
the moon.
what is gold on the periodic table?
Au
what is the boiling point of water?
100 degrees
what are the two poles on a magnet?
north and south.
what does abiotic mean
physical thing that is not living.
how many moons does earth have?
1
what is: homogenous?
something that is the same throughout.
what is the first element on the periodic table?
hydrogen.
what is a contact force?
a force that is applied when two things touch.
what is an apex predator?
a animal that is not eaten by anything.
how does a solar eclipse happen?
when the moon comes between the earth and the sun.
a mixture when a substance is dissolved into another is a?
a solution.
how many elements are there?
118
how to find mechanical advantage?
resistance force divided by the effort force.
what are plants called in the food chain?
producers.
how far is the moon from earth?
384,400 km.
f a substance does not dissolve, it is called:
insoluble
what does DNA stand for
deoxyribonucleic acid