which of these is the best explanation of how a smooth round stone become smooth Ans- It was in a
stream for a long time
Any astronomical body that revolves around a larger body is called Ans- Satellite
If you place bean seeds between moist paper towels and watch the stem leaves appear you will see a
demonstration of? Ans- Germination
Which element does not contain any neutrons? Ans- Hydrogen
How many atoms are in a single molecule of water (H2O) Ans- 2
Argon and Neon are..? Ans- Noble gases
Processes of the water cycle Ans- Evaporation, condensation, sublimination, and so on
in a balanced ecosystem, which of the following would have the greatest population? Ans- Plankton
water droplets Ans- Condensation
Friction is the force that Ans- Opposes motion between 2 surfaces
Which of the following reproduce by spawning? Ans- Fish
To test the effectiveness of plant fertilizer, groups of plants are grown with different types of fertilizer. A
control group of plants would? Ans- Not be given any fertilizer
When scientists measure a liquids resistance to flow, they are measuring the liquids Ans- Viscosity
, A radar is designed to report the track of an aircraft every second. If this radar reports 30 tracks in one
minute, what percentage of the time did the radar track the aircraft? Ans- 50%
Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the rate of $6 per hour, how
much did he earn that day? Ans- 5.00
A woman is looking for a bigger square office. She finds an office twice the area of her current office. If
the perimeter of her current office is 88 feet, how many square feet is the new office? Ans- 968 square
feet
How many feet of chain fence are necessary to enclose a dog pen that is square and has an area of 64 sq
feet? Ans- 32
A train goes twice as fast downhill as it can go uphill, and 2/3 feet as fast uphill as it can go on level
ground. If it goes 120 miles per hour downhill, how long will it take to travel 45 miles per flat land? Ans-
1/2 hour
The pet store had six puppies selling for 104 each and twelve kittens selling for 24 each. Today, only two
puppies and eight kittens were left. In dollar terms, what was the ratio of sales of puppies to kittens?
Ans- 13 to 3
Jamie just bought two boxes. The first box is square, with each side measuring 10 units, and is 4 units
high. The second box is rectangular and has twice the volume of the square box. If the height of the
second box is 5 units, and the width is 10 units, what is the length of the second box? Ans- 16 units
There are 9 red and 6 green marbles in a bag. A child reaches in the bag and randomly takes one marble.
What is the probability pf that child getting a green marble? Ans- .66
Each August, a resentment's rent is adjusted to the cost-of-living index. The rent has been $1,550 a
month, and the cost of living index for this August was 3.796. What is the new rent per month? Ans-
1,607.35
Perimeter of a garden is 84, what is the area? Ans- 441