Science Boxes 5

1) A fulcrum is a part of a _________.

• pulley
• wheel & axle
• inclined plane
• lever
• cookie

2) A _______ is a consumer that puts materials from dead plants and animals back into the soil,air, and water.

• scavenger
• predator
• prey
• decomposer
• grocery shopper

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

3) A telephone ringing and a person goes to answer it. The telephone ringing is an example of what?

• chemical energy
• amplifying sound
• stimulus
• response
• a wrong number

Tags

NGSS.MS-LS1-8

4) There are 2 balloons each filled with equal volumes of gas. One balloon is filled with helium and the other is blown up from someone's mouth. They are both released at the same time and one floats up and the other drops to the floor. Which of the following is true about the balloons?

• all of the above
• helium is less dense than the air around it
• carbon dioxide is heavier than the air around it
• air has a mass
• the molecules in the balloon tat dropped to the floor are arranged closer together than the molecules in the air around it.

Tags

NGSS.MS-PS2-4

5) What is true about green plants?

• sunlight has weight and takes up space
• green plants can grow in dark spaces
• green plants take in oxygen and give off carbon dioxide
• green plants take up space, take in some soil and make their own food
• green plants act as decomposers and return materials back into the soil.

Tags

NGSS.MS-LS1-6

6) What is the main difference between an ecosystem and a habitat?