Science

Question 1

Which of these reduces friction?

Answer 1

Ball bearings
ball bearings are used to reduce friction between moving parts.

Question 2

Which of these increases friction?

Answer 2

Car breaks, tire treads, and sandpaper

Question 3

When a lobster grows a claw to replace one that was lost, the process is called?

Answer 3

Regeneration

Question 4

An astronomical body that revolves around a larger body is called?

Answer 4

Satellite

Question 5

How many atoms are in a single molecule of water?

Answer 5

3 atoms

Question 6

According to the locations on the periodic table, argon, and neon are part of what group?

Answer 6

Noble gases

Question 7

When scientists measure a liquid’s resistance to flow, they are measuring the liquid?

Answer 7

viscosity

Question 8

Regeneration in man is limited to?

Answer 8

Healing of wounds

Question 9

By definition, an aquifer is?

Answer 9

River bottom made up of gravel and sedimentary rock

Question 10

To test the effectiveness of plant fertilizer, groups of plants are grown with different types of fertilizer. A control group of plants would?

Answer 10

Not be given any fertilizer

Question 11

Using the list, which of the following presents the stages of the water cycle in the correct order?
1. water vapor cools
2. precipitation occurs
3. evaporation occurs
4. condensation occurs
5. sunlight heats pond water

Answer 11

5,3,1,4,2

Question 12

Which of the following reproduces by spawning?

Answer 12

Fish

Question 13

In chemistry, to be classified as an organic substance must contain?

Answer 13

Carbon atoms

Question 14

Which of the following is a renewable resource?

Answer 14

Peanut oil

Question 15

Which element does not contain any neutrons?

Answer 15

Hydrogen

Question 16

Which of these is the best explanation of how a smooth round stone became smooth?

Answer 16

it was in a stream for a long time

Question 17

Which of the following is the best illustration of centripetal force?

Answer 17

ice skater spinning on the ice

Question 18

In a balanced aquatic ecosystem, which of the following would have the greatest population?

Answer 18

Plankton

Question 19

If you place bean seeds between moist paper towels and watch the stem and leaves appear, you will see a demonstration of

Answer 19

Germination

Question 20

Friction is a force that

Answer 20

opposes motion between two surfaces

Question 21

Mollusks typically have?

Answer 21

Shells

Question 22

if a jet is parked on a runway, the jet’s interia?

Answer 22

is equal to zero

Question 23

What is the symbol for the Hydroxyl ion?

Answer 23

OH-

Question 24

The chemical formula of a compound describes the elements the compound contains and the?

Answer 24

ratio of elements in a compound

Question 25

What are the two main gases that make up the stars?

Answer 25

Hydrogen and Helium

Question 26

Which of the following is a non-renewable resource?

Answer 26

Copper

Question 27

What do a hydrogen molecule and an oxygen molecule have in common?

Answer 27

size and charge on each electron

Question 28

The term “ meiosis” is usually associated with?

Answer 28

Reproduction

Question 29

Which do the following enables the pen to work?

Answer 29

Hydraulic force

Question 30

Which of the following actions produces a chemical change?

Answer 30

adding salt to the hot water

Question 31

Chocking is prevented by the?

Answer 31

Epilogttis covering the voice box

Question 32

the tympanic membranes are also known as

Answer 32

eardrums

Question 33

perpetual motion machines can never be built because it is not possible to eliminate?

Answer 33

Inertia

Question 34

Human skin cells divide by?

Answer 34

Mitosis