How was friction increased in the design of this mousetrap car?
A. by using an extension rod
B. by using small front wheel
C. by using rubber wheel covers
D. by placing the mousetrap between the two axis
C. by using rubber wheel covers
What statement describes the energy of the coaster on this section of this track?
A. Mechanical energy decreases as the height of the coaster decreases
B. Gravitational potential energy is stored as the height of the coaster decreases
C. Kinetic energy is transformed into gravitational potential energy as the speed of the coaster increases
D. Gravitational potential energy is transformed into kinetic energy as the height decreases and speed increases.
D. Gravitational potential energy is transformed into kinetic energy as the height decreases and speed increases.
In which biome would the climax species be reached most quickly following a fire?
A. taiga
B. desert
C. grassland
D. deciduous forest
E. tropical rain forest
C. grassland
Which cell part is responsible for energy release?
A. nucleus
B. ribosome
C. mitochondrion
D. golgi apparatus
E. endoplasmic reticulum
C. mitochondrion
How can major volcanic eruptions like Mt. St. Helens cause increase in natural erosion up to many kilometers away from the volcano?
A. during some eruptions, pumice falls to the surface causing large impact craters to form
B. during some eruptions, glaciers on the mountain move faster, causing U-shape valleys to form
C. during some eruptions, snow and ice melt on the mountain, causing greater river flows downstream
D. during some eruptions, new layers of sediment form as falling volcanic ash settles back to the surface
D. during some eruptions, new layers of sediment form as falling volcanic ash settles back to the surface
Some places have mountain ranges separated by wide valleys.
How does deposition change this landscape?
A. it fills the valleys
B. it removes valleys floor
C. it makes the mountain taller
D. it increases the distance between the mountains