Atoms and Nuclear Fusion
Which two subatomic particles are in the nucleus
Protons and Neutrons
What is the formula for speed?
Speed = distance/time
Kicking a ball causing it to move is an example of which of Newton's Laws
First
Wavelength is measured from
crest to crest or trough to trough
Mass and Distance
Which number tells you the identity of an atom?
Atomic Number (# of Protons)
Acceleration is a change in what?
Speed or direction
A rocket ship taking off is an example of which of Newton's Laws
3rd
What is the formula for the speed of a wave?
wavelength times frequency
Why does refraction happen?
The wave changes mediums so it changes speed
Manganese has an atomic number of 25 and an atomic mass of 55 amu. How many particles are found in its nucleus?
Manganese has an atomic number of 25 and an atomic mass of 55 amu. How many particles are found in its nucleus?
On a velocity-time graph, what shows a constant velocity
a horizontal (flat) line
Would a 12 pound bowling ball or a 6 pound bowling ball require more force to roll, and which law goes with this?
12 pound and 2nd
What electromagnetic wave has the highest energy
gamma
If a Carbon atom (6 protons, 6 electrons, 6 neutrons) loses two electrons, what is its new charge?
positive 2
Most stars are similar to each other in
composition
On a distance-time graph, what shows a constant velocity?
a positive line
1. A turtle swims through the ocean water.
2. A rocket moves upward in the sky.
3. An apple falls from a tree.
4. A ball bounces back when thrown against a wall
Which is not an example of Newton's 3rd law
An apple falls from a tree
If you want to make a sound wave louder, what needs to change about the wave?
Amplitude
An oxygen atom has 8 protons, 8 electrons, and 8 neutrons. How many valence electrons does it have?
6
Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars?
Helium
Why does a skateboard slow down when it changes from rolling on concrete to grass?
Friction
Why do you go into the dash when your parents slam on the breaks?
Newton's first law (Your body has inertia)
Why do astronauts wear headsets in space?
Sound waves have to have a medium to travel (cannot travel through empty space)
What two elements did all other elements derive from?
Hydrogen and Helium