Chapter 4
Full form of RNA
Ribonucleic Acid
What are metal mixtures called?
Alloys
What does an object do when it vibrates
Move back and forth
If I am standing outside at exactly 12:00 PM (noon), will my shadow be at its longest or its shortest?
Shortest (the sun is directly overhead).
Give 1 example of energy
Mechanical energy
What is the offspring of lion and tiger called?
Liger
Define flammable
A substance that catches fire easily
What is Sound waves
Sound travels from a vibrating object to our ears
If you traveled to the Moon, would your mass change or your weight change?
Only your weight changes (due to gravity). Your mass stays exactly the same.
What is refraction
Bending of light
If an offspring belong to the same specues as their parents, they are _____
Fertile
What is the range of Alkali in the pH scale
7.5-13.5
What is the speed of sound
343m/s
On Earth, it rains water. But on giant gas planets like Neptune and Uranus, the extreme pressure in the atmosphere is so high that it crushes carbon atoms into a specific solid gemstone. What does it 'rain' on these planets?
Diamonds
If you dissolve 50 grams of salt into 500 grams of water, what will be the total weight of the new salt-water solution?
550 grams
All organisims in species share characteristics but are not _________ to each other
Identical
A mixture of food dye and water can be seperated by using a piece of apparatus called?
Condenser
What is Echo. Give an example
The reflection of a sound wave. A great example is an empty room
Is sun revolving and rotating like the earth and the moon. True/False, if true why?
True it is rotating around its own axis and revolving around the SUPERMASSIVE BLACKHOLE of the milky way galaxy
If you burn a 5kg log in a campfire, the pile of ash left behind weighs much less than 5kg. Does this mean the matter was destroyed?
No. The rest of the mass escaped into the air as smoke and gases.
Which virus causes a dangerous and an unpleasent flu?
H3N2
Tel me all about Zinc
Elemnet/Mixture
Appearence
Melting point
Example Uses
It is an element
Silvery grey soft metal
419.5 degree Celcius
To cover a in a thin layer to protect it from rusting
What is the partial solar eclipse
When the moon covers the sun partially
If the moon and earth are revolving in an elliptical/circular motion, so why don't we see a solar eclipse every month
Because the moon's orbit is tilted 5o to the left or the right
All of the "Inner Planets" (Mercury, Venus, Earth, and Mars) share one specific physical characteristic that makes them different from the "Outer Planets." What is it?
They are Rocky