Physical Science
Matter is made of tiny particles called
an atom
What controls cell activities?
The nucleus
What does a chemical change create?
a new substance
What is another name for the Sun?
A star
What is Earth's core mostly made of
iron and nickel
This has a fixed shape and volume
a solid
What does the mitochondria release energy from?
From food
Name two chemical reactions
Burning and rusting
What is reflected off of the Moon?
sunlight
What cycle moves water on Earth?
The water cycle
What is matter?
mass and volume
All living things are made of
Cells
Light waves can travel through
an empty space
What is Earth's thickest layer?
the mantle
Is most of Earth's water saltwater or Freshwater?
Most of Earth's water is Saltwater
What pulls objects toward Earth?
Gravity
Carries genetic information
DNA
Does heating matter make particles move slower or faster?
It makes them move faster.
What does Earth's tilt cause?
It causes seasons
What are fossils?
They are preserved remains of organisms.
What slows motion between surfaces?
Friction
What determines traits?
Genes
Give an example of a solid
a desk
What does weathering do to rocks?
It breaks them into smaller pieces
Geosphere
Hydrosphere
Atmosphere
Biosphere