Force and Motion
Sound Waves
Magnets
Earth and Space
Genetics
100
When the speed of a moving object increases, the impact force ____________________
Increases
100
One wavelength measures...
From one crest to the next, or from one trough to the next.
100
True or false:
Aluminum cans are magnetic
False.
They do not contain iron.
100
If point A represents Summer, and point C represents Winter, what season occurs at point D?
Spring (Earth revolves around the Sun counter-clockwise).
100
What type of reproduction requires one parent and results in a genetic clone?
Asexual reproduction.
200
When the mass of a moving object decreases, the impact force ____________________.
Decreases
200
Name the two types of waves.
200
The strongest parts of a magnet are called...
North and South poles.
200
Why do we have 4 seasons where we live?
The earth is tilted on its axis
Earth revolves around the Sun
The Suns energy becomes less focused where we live in the winter.
The days get shorter in the winter.
200
What does each letter represent?
A. Sperm
B. Egg
C. Fertilization
300
Describe the difference between potential and kinetic energy.
Potential energy is stored energy. Potential energy can be influenced by elevation or the shape of an object. It can be stored in chemical bonds.
Kinetic energy is the energy of motion. The faster something moves the more kinetic energy it has.
300
The louder a sound, the higher the ______________ of the waves.
Amplitude.
300
State the rules of the forces that act between North and South magnetic poles.
Like (same) poles repel. North and North or South and South.
Opposite poles attract. North and South
300
The Sun always rises in the East and sets in the West. Explain how the Sun's path through the sky changes during the year.
The sun is lower in the sky during the winter, and higher in the sky during the summer.
300
What percent of the offspring will show the recessive trait?
25% (aa)
400
Acceleration is effected by _______________ and ________________.
Force and mass
400
The lower the pitch of sound, the lower the _________ of the waves.
Frequency
400
Draw an electromagnet. Include the following parts:
Power source (battery)
Coil (copper wire)
Iron core
400
Why does the moon stay in orbit around
the earth?
The moon orbits earth, instead of the sun, because it's closer to earth.
The moon has a forward velocity and earths gravity pulls on it. This causes a circular path around earth.
400
Will the offspring be identical to the parent, Explain?
No, there are two parents that each give 1/2 of their DNA to the offspring.
500
The three types of friction are sliding, rolling, and fluid. How can you change the amount of each type of friction on a race car?
Sliding: smoother tires
Rolling: add bearings to the wheels
Fluid (air resistance): change the shape of the car
500
There are three states of matter; solid, liquid and gas. Sound travels fastest in a _____________ because ________________________.
Sound travels fastest in a solid because the particles are closer together.
500
Describe how you can make an electromagnet stronger.
Increase the number of coils.
Increase the power source (voltage).
500
When the moon is between the sun and the earth, it is in _________________ phase.
New Moon
500
Describe how selective breeding and genetic engineering are different.
During selective breeding the two parents are chosen based on certain characteristics you want the offspring to have.
Genetic engineering takes a gene from an organism and puts it in the DNA of another.
