Cells
What structure controls the activities of the cell?
Nucleus
What do we call a change where new substances are formed?
Chemical reaction
What force pulls things to Earth?
Gravity
What layer is between the crust and the core?
Mantle
What galaxy contains our Solar System?
Milky Way
What part of the cell produces energy?
Mitochondria
What do we call substances that start a chemical reaction?
Reactants
What do we call a push or a pull?
Force
What is the inner part of Earth called?
Core
What planet has the strongest gravity?
Jupiter
What structure controls what enters and leaves the cell?
Cell membrane
What do we call substances made after a reaction?
What force slows things down when they move on a surface?
Friction
What do we call melted rock inside Earth?
Magma
What do we call a large group of stars held together by gravity?
Galaxy
What is the jelly-like substance inside the cell?
Cytoplasm
What type of reaction gives off heat?
Exothermic reaction
What do we call how fast something moves?
Speed
What do we call melted rock on Earth’s surface?
lava
What object forms when a star explodes?
supernova
What cell structure contains genetic material?
Nucleus / DNA
What gas is often produced when acids react with metals?
Hydrogen gas
What tool can measure force?
Spring scale
What causes earthquakes?
Movement of tectonic plates
Who developed the law of gravity?
Isaac Newton