The neutron was discovered by James Chadwick.
a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.
a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.
A volcanologist is a geologist who studies the process involved in the formation of a volcano. He also studies the eruptive nature of the volcano along with their current and historic eruptions.
The tasks done by a volcanologist do to study volcanoes are =
1. use autoclaves to imitate the interior of a volcano
2. simulate volcanic explosions with computer programs
3. study lava samples
4. listen to the sounds of the interior of a volcano
The complementary strand is
taaccgat
T -A
G-C
Always!
A landform is a feature on the Earth's surface that is part of the terrain. Mountains, hills, plateaus, and plains are the four major types of landforms. Minor landforms include buttes, canyons, valleys, and basins. Tectonic plate movement under the Earth can create landforms by pushing up mountains and hills.
A plain is nothing but a low-lying relatively flat land surface with very gentle slope and minimum local relief. About 55% of the earth's land surface is occupied by plains. Most of the plain have been formed by deposition of sediments brought down by rivers.
Plateaus are elevated flatlands. In other words, it is flat land which is standing high above the surrounding area. Furthermore, they may have one or more sides with steep slopes. Also, depending upon the plateau, their height varies from a few hundred meters to several thousand meters.
