Science 3rd Term Review

Density

100

What is density?

How much mass is in a specific amount of space.

200

What is the density of water (H₂O)?

Perfect 1.00

300

Fill in the blank

When a rubber duck floats on water, it has _____ density than water.

Less

Forces and Motion

100

Who discovered gravity?

Isaac Newton

200

What is gravity?

A noncontact force that pulls everything down to the Earth's core.

300

What type of force is friction?

Contact force

Photosynthesis

100

What is photosynthesis?

A process when green plants create food and convert light energy into chemical energy.

200

What are the reactants of photosynthesis?

Sunlight, CO_2, and H₂O

300

What are the products of photosynthesis?

Glucose(C₆H₁₂O₆) and Oxygen(O₂)

Potential and Kinetic Energy

100

 True or False

A car has potential energy when it is moving

False

200

What is Kinetic energy?

The force of movement.

300

How do you determine Potential energy?

By height

Ecosystem

100

What is a food web?

A bunch of food chains together.

200

What makes a food chain?

Producers, Herbivores, Omnivores, Carnivores, and Decomposers.

300

What do Omnivores eat?

Both plants and animals