3rd Grade Science - End-of-Year Review

Front

What is a lever?

Back

A lever is a simple machine that helps lift or move heavy objects using a fulcrum.

Front

What is the smallest particle made of electrons, protons, and neutrons?

Back

An atom is the smallest particle that is made of electrons, protons, and neutrons.

Front

What do we call organisms that eat other organisms in a food web?

Back

Consumers are organisms that eat other organisms in a food web.

Front

What is a proton?

Back

A proton is a positively charged particle found in the nucleus of an atom.

Front

What is an electron?

Back

An electron is a negatively charged particle that orbits the nucleus of an atom.

Front

What is a food web?

Back

A food web is a system of interconnected food chains showing how energy and nutrients flow through an ecosystem.

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to push or pull in a more efficient way.

Front

What is a screw?

Back

A screw is a simple machine that converts rotational motion into linear motion, often used to hold objects together.

Front

What is an incline plane?

Back

An incline plane is a flat surface that is tilted at an angle to help lift objects with less effort.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.