Grade 7- Science Quiz Bee

The heart, brain, and stomach are made up of groups of:

• organelles

• organ system

• tissues

• blood

There are organelles that are found both in animal and plants cells. Which of the following is present only in plant cell?

• vesicle

• lysosome

• ribosome

• chloroplast

_______is the liquid portion of planet Earth.

• Biosphere

• Hydrosphere

• Lithosphere

• Atmosphere

Gary finished the 500 meter run in 50 seconds? What was his speed?

• 10 m/s

• 0.10 m/s

• 40 m/s

• 5 m/s

Which of the following is NOT a transverse wave?

• Visible light

• Water waves

• Radio waves

• Sound waves

These are the uses of water in our everyday life.

• For drinking and for various life processes.

• Plays a vital role in the global food industry.

• Composed of a single mineral or a group of minerals.

• Needed for hydroelectric power production.

Three identical motorcycles are moving on the road. Motorcycle A is speeding up, motorcycle B is slowing down while motorcycle C is moving at a constant speed but swerves from left to right. Which of the three motorcycles experience/s acceleration?

• Motorcycle A

• Motorcycle B

• Motorcycle C

• None of these

These are the sources of water pollution.

• Litter consisting of plastic items, wrappers, garbage thrown directly in creeks, lakes, or rivers.

• Petroleum spills happen either accidentally or deliberately.

• Swimming, in-stream consumption of water.

• Industrial activities use nearby aquatic resources as accessible waste dumps.

You bought an 18 karats ring which contains 18g of gold. What is the % by

mass of gold in a ring?

• 65%

• 75%

• 85%

• 95%

If I add more water to this setup, what will happen to the pH?

• It will increase and get closer to 7

• It will stay the same and not change

• It will decrease and get closer to 0

• It will increase and get closer to 0